Berlin

Berlin is the capital and largest city of Germany and one of its sixteen federal states. It lies in the northeast of the country, surrounded by the state of Brandenburg, on a low glacial plain traversed by the Spree and Havel rivers. The city's name is generally traced to a Slavic word meaning something like "swamp," reflecting its soft ground. From medieval trading settlements it grew into the seat of the Electors of Brandenburg, then the capital of the Kingdom of Prussia, and later the capital of the German Empire, the Weimar Republic, and the Nazi state. Its twentieth-century history, marked by world war, destruction, and division into East and West sectors until 1990, makes it one of the most widely studied cities in modern European history.

Berlin is also the country's largest metropolis by population and a major centre of politics, culture, science, and business. It hosts the federal government and parliament, a dense concentration of museums, universities, research institutes, and creative industries, and a large and diverse population. Its urban form still reflects its successive phases: Baroque and Prussian axes, Gründerzeit residential districts, Weimar-era modernism, wartime ruins and postwar reconstruction, and the post-1990 rebuilding of the centre around former border zones.

This entry first covers the city's name, landscape, and climate, then traces its history from the medieval period through Prussian, imperial, Weimar, Nazi, Cold War, and reunified eras. It then describes the political system and administration, including the 2026 state election and the open question of government formation, followed by population, economy, transport, urban planning, culture, heritage, science and education, and the challenges the city faces today.

Name and early origins

The name is generally traced to the West Slavic language family. It may derive from the Old Polabian stem berl-/birl-, meaning "swamp," and the name Berlin is derived from the Slavic language and means roughly "swamp" or "wet place," referring to the relatively soft ground in the city centre. The soil is still a practical problem: for large construction projects in the inner city, these conditions continue to cause structural problems, additional costs and delays.

Slavic settlement predates the German towns, but it was located outside the later city centre. Accounts differ on the date. One tourism-oriented history gives the seventh century for Slavic settlers in Spandau and Köpenick, while the Spandau article dates the Slavic Hevelli settlement there to the 7th or 8th century. No Slavic traces could be found in the city center of Berlin. Spandau and Köpenick were first documented later: Spandau in 1197 and Köpenick in 1209, though these areas did not join Berlin until 1920.

The founding is best understood as several separate dates, not one. Archaeological and documentary evidence point in different directions. One visitor-oriented history states that the oldest finds date back to 1170, while Wikipedia's history of the city places the origin of the two merchant settlements at the end of the 12th century and notes that it is unclear which settlement is older and when they got German town rights. For documents, the year 1237 was later taken as the year of founding as the first recorded mention of Cölln is from that year. The first mention of Berlin dates to 1244. The city's own history site confirms that Berlin dates its official founding to 1237, the year of the first recorded mention of Cölln.

The year 1307 marks a political union rather than a founding. Berlin and Cölln formed a union in order to protect and expand their rights against the margrave. Each town had its own administration and budget, maintaining internal independence while presenting a united front to the outside world. Sources also differ on when the towns were fully joined: one gives 1432 for the formal merger into the town of Berlin-Cölln, while another states that the two were merged by Frederick I of Prussia to form Berlin in 1710.

Twin towns and the river crossing

Berlin and Cölln were physically separate settlements on opposite banks of the Spree. Cölln was located on the Fisher Island section of Spree Island, opposite Altberlin on the western bank of the River Spree, while Berlin occupied the eastern bank, centered on what is today the Nikolaiviertel. From the beginning, the two cities formed an economic and social unit. Each town nonetheless kept its own institutions, so the relationship combined close cooperation with separate civic identities.

The river crossing was the economic core of the arrangement. Since the trade route from Magdeburg to Frankfurt (Oder) crosses the twin town and the inland water-transportation routes also passed through it, Cölln-Berlin quickly came to prosperity. A second bridge followed: the Lange Brücke (Long Bridge), today the Rathausbrücke (Town Hall Bridge), was erected across the Spree in 1307 with a common town hall in the middle of it.

Why a small settlement became a commercial centre

Several conditions combined to turn two merchant settlements into a regional hub. The settlements were founded during the German eastward expansion, and the settlements of Berlin and Cölln were established during the German eastward expansion (Ostsiedlung). A Spree crossing on an overland route allowed goods to be transferred between land and water transport, and merchants could use both. Where earlier Slavic settlement had focused on the surrounding plateaus and waters, the German towns concentrated trade in the river valley itself.

The commercial importance of the crossing also shaped the political arrangements of the towns. Their 1307 alliance let them coordinate defence and trade against the margraves of Brandenburg, which in turn gave the merchant towns the leverage to grow into a capital in later centuries.

Landscape and waterways

Berlin covers about 892 km², and the surrounding state of Brandenburg completely surrounds the city. The city stretches roughly 45 km from east to west and about 38 km from north to south along its longest axes. The city centre lies in the Berlin–Warsaw Urstromtal, a glacial meltwater valley that formed as the last ice sheets retreated at the end of the last Weichselian glaciation, and the Spree now flows along it along this valley. The historic centre sits where the valley is narrowest, a location that made crossings and traffic easier at the narrowest and therefore most transport-favourable point of the valley.

Outside the valley the land rises onto two low plateaus. The Barnim plateau lies to the north and the Teltow plateau to the south of the valley between the low Barnim plateau to the north and the Teltow plateau to the south. Reinickendorf and Pankow are largely on the Barnim, while Charlottenburg-Wilmersdorf, Steglitz-Zehlendorf, Tempelhof-Schöneberg and Neukölln are mostly on the Teltow most of the boroughs—Charlottenburg-Wilmersdorf, Steglitz-Zehlendorf, Tempelhof-Schöneberg, and Neukölln—lie on the Teltow Plateau. The Spandau district lies partly in the glacial valley and partly on the Nauen Plain to the west partly on the Nauen Plain, which stretches to the west of Berlin. Relief is modest: the highest point in the centre is the Kreuzberg at 66 m, while the Teufelsberg and the Müggelberge on the outskirts reach about 115 m the highest elevations in Berlin are the Teufelsberg and the Müggelberge in the city's outskirts, and the Kreuzberg is the highest elevation in the centre.

The Havel flows north to south through western Berlin and receives the Spree in Spandau the Spree empties into the river Havel, which flows from north to south through western Berlin. The Spree and Havel systems, together with canals, shape both the transport network and the city's recreational life. The largest lake within the city limits is the Müggelsee in Köpenick, with a surface area reported as 7.4 km² Großer Müggelsee is the largest body of water within Berlin's city limits: 7.4 km² of surface area; another source gives 7.5 km² and notes that the lake also serves as a drinking-water reservoir the largest lake in the capital and also the largest drinking water reservoir in Berlin. The Tegeler See is the second-largest lake, with seven islands and a popular setting for sailing and steamboat trips Lake Tegel is the second largest lake in Berlin and often named as the most beautiful one. There are seven islands and it is a great lake for sailing, boating or taking a steamboat ride..

Forest and parkland cover a large share of the city, although sources do not agree on a single percentage. The Grunewald on the Teltow plateau is commonly described as Berlin's largest green space, at about 3,000 ha At 3,000ha (7,413 acres), it is Berlin's largest green space. Its soils differ from the surrounding plateau, because the Grunewald is underlain by meltwater sands more than 20 m thick, while the rest of the Teltow is shallow and dominated by boulder clay the Grunewald is dominated by exceptionally thick (20 meters and more) meltwater sands. The Tiergarten, once royal hunting grounds, is covering around two square kilometres and lies close to the Brandenburg Gate Once the royal hunting grounds, just outside the city walls, Tiergarten is Berlin's Central Park.. Around the Müggelsee, the forest and the Müggelberge hills offer hiking and cycling routes Surrounding this huge lake – great for boat trips or swimming in the warmer months – you'll find a forest with hiking and biking trails, including the range of hills known as the Müggelberge.. Tourism material describes Berlin as one of Europe's greenest cities, with more than 2,500 public parks and recreational areas.

Climate and urban environment

Berlin lies in the temperate latitudes on the North European Plain, and its weather reflects a mix of maritime and continental influences. Sources disagree on the exact Köppen label. One describes the climate as temperate oceanic that shades into continental, with Cfb bordering Dfb, while others call it moderately continental. The annual mean temperature is about 9.5 °C and annual precipitation is about 591 mm, and other station records give a slightly lower rainfall figure of about 570 mm. Summers are warm, with average daytime highs of roughly 22 to 25 °C, while winters are cold, with average highs near 3 °C and frequent frosts. Cold air masses from Siberia and Atlantic currents both shape the city's weather, so the seasonal swings are wider than in western Germany.

The urban heat island is one of the best-documented features of Berlin's climate, but the reported size of the effect varies by source and by time of day. The European Environment Agency's adaptation case study states that the city's heat island can raise temperatures by up to 4 °C relative to surrounding areas. A municipal-facing summary gives a peak of 4 to 5 degrees Celsius higher than in the region on hot days, while a tourism-oriented source puts the typical difference at one or two degrees Celsius, especially at night and in winter. The effect is strongest in the dense core, where buildings and paved surfaces store heat. Projections also point to more heatwaves: the EEA case study expects the frequency of such events to rise sharply by the end of the century under a high-emissions scenario.

Berlin's landscape is the product of the last glaciation. Meltwater channels and glacial deposits left predominantly sandy soils and flat topography across the region. These soils retain little water, which makes the region sensitive to droughts and to falling groundwater levels. In the city, the pore spaces of sandy and gravelly sediments, located well below the surface, are saturated with groundwater. The depth to the water table varies with the terrain: it lies at or close to the surface in the glacial spillway and between about 5 and more than 30 metres on the plateaus. Water supply in Berlin has been drawn mainly from a shallow aquifer of glacial sand and gravel, but the picture is more complicated than groundwater alone. One study reports that 74 % of drinking water comes from bank filtration and groundwater recharge, and that Berlin's supply relies more on surface water than most German regions do. The 2018–2023 drought caused severe soil moisture and groundwater deficits and affected both the quantity and quality of Berlin's water.

Berlin's rivers, canals, lakes, woodlands, and marshy lowlands form a mosaic of habitats inside the city limits, and these help sustain plant and animal life. Many of the lakes are glacial in origin, and the Grunewald lake chain is a well-known example. Nature conservation is handled through the same planning system that regulates construction. Since 1994, the Berlin Landscape Programme has required a minimum amount of green surface in new developments through the Biotope Area Factor, a rule intended to limit heat stress and runoff. Long-term research on extensive green roofs in Berlin has also found that species richness can be increased with minimal irrigation and maintenance, which suggests that rooftop greening can add habitat in dense districts.

Adaptation measures have been developed over several decades. In 1983, West Berlin launched a state programme to green courtyards, facades, and roofs in densely built areas, and over twelve years, 1,643 projects were approved. From 1996 the city moved from direct subsidies to indirect incentives, including a stormwater charge on property owners whose charge falls as less rainwater enters the drainage system. Green roofs are a central tool in this approach. Studies cited in one review found that extensive green roofs with a substrate depth over 10 cm can retain about 66% to 69% of rainfall. Current planning focuses on the two extremes of drought and heavy rainfall, and it uses GIS-based models of building and vegetation data to decide where interventions are most needed. A recent comparative study of Berlin and Cologne concludes that vegetated measures, particularly swales and tree-based systems, achieve the highest overall scores among stormwater options.

Medieval towns and the Prussian capital

Berlin began as two merchant settlements on opposite banks of the Spree. Cölln, on the river island that is now partly called Museum Island, is first named in a 1237 document, and Berlin on the facing bank appears in records from 1244. The two towns grew on a major east-west trade route that ran from Magdeburg to Frankfurt an der Oder and crossed the Spree at this point, and inland waterways passed through the same site. Merchants and craftsmen settled there, and by 1307 the two towns shared a town hall on a second crossing, the Lange Brücke, which is now the Rathausbrücke. Sources differ on when the towns became one municipality: one standard reference gives 1432 for the formal merger into Berlin-Cölln, while another dates the unification of the two towns into a single city to 1710. The city's own historical overview gives a population of about 8,500 by 1400, along with roughly 1,100 buildings and three town halls, but estimates for the late fourteenth century vary.

The Hohenzollern dynasty transformed the twin towns into a princely seat. Frederick I became Elector of Brandenburg in 1415, and in 1417 the electoral capital moved from Brandenburg an der Havel to Berlin. In 1443 Frederick II began a residential palace on the Cölln side of the Spree, and the citizens resisted it. In 1448 the so-called "Berliner Unwille" erupted into open revolt, and although the uprising failed, the towns lost many of their political and economic privileges. The palace was completed in 1451 and gradually came into use. From 1470 Berlin-Cölln served as the electors' residence, and from 1486, under John Cicero, it became their permanent seat. The Hohenzollerns' presence turned a trading town into the political centre of the margraviate.

The dynasty's rise to royal status followed a more complicated path. Brandenburg-Prussia, formed by personal union of the Margraviate of Brandenburg and the Duchy of Prussia, was ruled by Frederick III, who in 1701 raised his status to King in Prussia. The coronation took place on 18 January 1701 in Königsberg, not in Berlin, and it followed Emperor Leopold I's recognition in exchange for financial and military support. Because the title was contested within the Holy Roman Empire, the new kingdom's legitimacy remained disputed for some time, but Berlin was nonetheless established as the capital of the Kingdom of Prussia. Under Frederick I, the towns of Berlin, Cölln, Friedrichswerder, Dorotheenstadt, and Friedrichstadt were combined into one royal capital in 1709 or 1710, depending on the source. The Edict of Potsdam of 1685 had already opened the Brandenburg lands to Huguenot refugees, whose skills contributed to the growth of crafts and trade in the expanding city.

The Baroque period gave the city much of its formal Prussian character. Frederick I commissioned Charlottenburg Palace for his wife, Sophie Charlotte, and the palace became a model of royal architecture in the region. Earlier electors had shaped the layout of the city. Unter den Linden was developed as a tree-lined avenue leading from the palace toward the Tiergarten, and Friedrichstrasse was laid out as the main axis of the Friedrichstadt quarter. The regular grids, squares, and avenues of these districts gave Berlin the planned look that later architects expanded, distinguishing it from the older, irregular medieval centre around the Spree islands.

Industrialization and the imperial capital

Berlin's shift from a royal and administrative seat to an industrial metropolis gathered pace in the decades after 1850. Companies such as Siemens (1847), Schering (1864) and Schwartzkopff (1852) were founded in the city and drew a growing stream of workers from the countryside. The locomotive builder August Borsig and the electrical firm AEG, founded by Emil Rathenau, were among the best-known manufacturers. Machine building, chemicals, electrical engineering and printing and publishing were the leading sectors, and factories spread along the Spree and into the peripheral districts.

Population growth was among the fastest in Europe. The city had about 826,000 inhabitants in 1871 and about 2.07 million by 1910, an increase of roughly 150 percent in under four decades. Most of this growth came from migration, not natural increase: many newcomers were young men and women from rural eastern provinces who hoped to find wages in the factories or in construction. Companies also built housing for their own staff, which produced workers' settlements such as Siemensstadt and Borsigwalde on the city's edges.

Most of the new residents were housed in Gründerzeit tenements, the speculative apartment blocks built in the boom years after 1871. Developers packed multi-storey buildings onto narrow plots, arranging flats around a sequence of small rear courtyards. Light and air were scarce in the inner courtyards, and the flats were often small and crowded, with several families sharing a single toilet or water tap. These districts, including Wedding, Moabit, Friedrichshain and Kreuzberg, became the core of Berlin's working-class population and of its labour movement.

Transport infrastructure made this expansion possible. Several large railway termini were built by separate private companies around the old city, and an elevated urban railway linking them opened in 1882. Freight moved on the Spree and its canals, which carried coal, building materials and industrial goods. Together, these links connected Berlin to German and European markets and turned the city into a hub of the national rail network.

After the proclamation of the German Empire in 1871, Berlin also became the seat of imperial government. Ministries, the imperial chancellery and the Prussian administration were concentrated there, and the Reichstag, the imperial parliament, met in the city. Its new parliament building was completed in the 1890s, and government quarters grew up around the Wilhelmstrasse. The political weight of the capital attracted further banks, publishers and the press to the city centre.

Rapid growth overwhelmed the city's services. Housing shortages drove up rents and encouraged overcrowding, while water supply, sewage and waste disposal lagged behind demand. Municipal authorities expanded the sewer network and water works, and public health became a major concern of city government; the pathologist Rudolf Virchow, who sat on the city council, was among the leading advocates of sanitary reform. Debates over housing, municipal services and working conditions made the working-class districts central to the political struggles of the late imperial period.

Greater Berlin and the Weimar Republic

The Greater Berlin Act was passed by the Prussian parliament on 27 April 1920 and took effect on 1 October of that year. It joined the historic city with seven neighbouring towns (Charlottenburg, Köpenick, Lichtenberg, Neukölln, Schöneberg, Spandau and Wilmersdorf), dozens of rural communities and a number of landed estates into one municipality. The area grew from about 66 km² to roughly 883 km², and the population roughly doubled to about four million, which made Berlin the largest city in Germany. The new municipality was divided into twenty boroughs, a number reduced to twelve in 2001. The reform ended years of rivalry in which neighbouring communities competed for taxpayers and blocked coordinated development, and it made integrated urban planning across the whole territory possible.

During the Weimar Republic (1919–1933), Berlin became one of Europe's leading cultural cities. Its theatres, cabarets, cinemas and dance halls drew artists and audiences from across the continent, and the city became known for its tolerance of unconventional lifestyles; in the early 1920s more than a hundred gay and lesbian bars operated there. Film gradually displaced the music hall and the stage as the most popular form of entertainment, and Berlin studios produced many of the decade's most influential films. Jazz clubs and dance orchestras flourished alongside modernist architecture and design, and the city's housing projects of the period became internationally studied examples of social modernism. This cultural flowering coexisted with poverty and social tension, and its reputation for openness has often been read as a response to the trauma of defeat in the First World War.

Economic instability was the central pressure on the republic. Reparations demanded under the Treaty of Versailles strained the state budget, and the government financed its spending by printing money. After the French and Belgian occupation of the Ruhr in January 1923, the currency collapsed: by late 1923 the mark had lost almost all of its value, and savings were wiped out for many middle-class households. Shortages, black markets and rising disease, including tuberculosis, marked daily life in Berlin and other cities. The crisis was ended by the introduction of the Rentenmark in November 1923, backed by mortgages on agricultural and industrial land, and by the Dawes Plan, which stabilised reparations payments in 1924. The inflation of 1923 left a lasting distrust of the state among many Berliners. After 1929, the Great Depression brought mass unemployment and deepened political polarisation. Street fighting between communist, socialist and nationalist paramilitary groups became a regular feature of Berlin's political life, and the city's parliamentary and municipal institutions came under increasing strain.

Berlin also ranked among the world's foremost centres of scientific research. Universities, the Prussian Academy of Sciences and the research institutes of the Kaiser Wilhelm Society attracted leading physicists, chemists and mathematicians. Albert Einstein held positions in the city from 1914 and was among the scientists whose work made Berlin a focal point of physics and quantum theory in the 1920s. He left Germany in 1933, after the Nazi seizure of power, and many colleagues, particularly those who were Jewish, followed him into exile, a loss that weakened the city's research community for years.

The Weimar years ended in 1933 when the Nazi regime under Adolf Hitler took control of the city's administration, and the cultural and scientific life that had developed over the previous decade was rapidly dismantled.

Nazi rule, war, and destruction

The Nazi seizure of power in January 1933 quickly reached Berlin, where the regime set up its first political prisons and concentration camps. The Nazis celebrated the "Day of the Takeover" with torch processions through the Brandenburg Gate, and the Enabling Act of 23 March 1933 ended parliamentary constraints on the government. In June 1933, during the so-called Köpenick Week of Blood, SA units abducted and tortured about 500 people in the district of Köpenick. About 3,000 mostly left-wing opponents were held at the Oranienburg camp, just north of the city, until it closed in 1934. Berlin's police, city administration, and ministries were brought under Nazi control, and the capital became the administrative and propaganda centre of Nazi Germany under Adolf Hitler.

Berlin also had the largest Jewish community in Germany. In 1933 it numbered about 160,000 people, roughly a third of the country's Jews. A nationwide boycott of Jewish shops and professional offices began on 1 April 1933, and most Jewish civil servants and professionals were dismissed or pensioned that year. Books by Jewish, liberal, and left-wing authors were burned publicly in May 1933. Emigration reduced the Jewish population to about 80,000 by 1939. Among the prominent figures who left was physicist Albert Einstein. The pogrom of November 1938, known as Kristallnacht, destroyed eleven of the city's fourteen synagogues and damaged the other three, and more than 1,000 Jews were arrested and sent to Sachsenhausen.

Deportations from Berlin began in October 1941, once emigration was formally banned. The first transport left from the Grunewald freight yard on 18 October 1941 with 1,013 people. Later transports departed from the Anhalter and Moabit stations, and many went straight to extermination sites from 1942 onward. The Platform 17 memorial at Grunewald documents 186 transports, and sources give a total of more than 50,000 Berlin Jews deported, of whom more than 55,000 Berlin Jews are counted among the victims. The last deportation left the city in March 1945. The Wannsee Conference of January 1942, held in a villa in the Berlin district of Wannsee, coordinated the wider policy behind these transports.

The war brought a different form of destruction. Berlin was bombed by the RAF from 1940, by the US Army Air Forces from 1943 to 1945, and by the French air force in 1944–45, as part of the strategic bombing of Germany. The raid of 3 February 1945 was among the heaviest, and it destroyed the Gestapo headquarters on Prinz-Albrecht-Straße, which had been spared until then. Estimates of civilian deaths from air raids range widely, from about 20,000 to 50,000. The bombing relied largely on incendiary devices, which started fires across dense districts. Around 600,000 apartments were destroyed, and the population fell sharply from its prewar level of about 4.5 million.

The Second World War ended in the city itself. The Battle of Berlin lasted from 16 April to 2 May 1945. Fighting took place street by street and house by house, and the Soviet assault and German defence together caused heavy losses on both sides, with roughly 80,000 Soviet soldiers killed. Accounts of civilian deaths in the battle differ. Widely cited estimates put the rubble at about 55 million cubic metres, and the clearance of this debris, along with the rebuilding of streets, housing, and infrastructure, became a task that lasted for years and shaped urban planning in the decades that followed.

The memory of these years now shapes the city's public spaces. The Platform 17 memorial at Grunewald station was unveiled in 1998, and the Plötzensee Memorial commemorates victims of Nazi judicial killings. The city's memorials and museums form a substantial part of its cultural heritage and its public history.

Division and the Cold War

Although Berlin lay deep inside the Soviet occupation zone, the victorious powers gave each of the four occupying states control over one of its sectors. Despite being located in the Soviet zone of control, Berlin, the capital of Germany, was also split into four sectors, each of which was controlled by the Allies. Sources differ on when this arrangement was fixed. One account credits the February 1945 Yalta meeting with dividing the city, while the whole of the eastern part of Berlin was allocated to the Soviet Union. Another dates the division to the period after the Potsdam Conference, and a third points to the London Protocol of 1944, which established the division of Germany into zones of occupation, and the city of Berlin into sectors. Soviet forces took the whole of Greater Berlin first, and the western Allies entered their sectors later, in July 1945.

The split soon reached the city's government. In East Berlin, the ruling Socialist Unity Party (SED) forced out the existing municipal council at the end of November 1948, and Friedrich Ebert was then installed as mayor, though the scope of his ambit was, however, restricted by the Western military authorities to the eastern (communist) sector. When the Federal Republic of Germany and the German Democratic Republic were founded in 1949, both constitutions laid claim to Greater Berlin. East Berlin became the capital of East Germany.

The first major crisis of the Cold War over the city came in 1948. On 24 June, the Soviet Union cut off all road, rail, and canal access to the Western-occupied sectors of Berlin. Historians generally read this as an attempt to push the Western powers out of the city and to stop the creation of a separate West German state. Moscow publicly cited "technical difficulties," but the blockade was also meant to sabotage currency reforms and the unification of the western zone of Germany. The Western Allies answered with the Berlin Airlift, which ran from 26 June 1948 to 30 September 1949 to carry supplies to the people of West Berlin. US and British aircraft landed in Berlin more than 200,000 times, delivering 13,000 tons of food, fuel, and other necessities each day. The operation's total of about 2.3 million tons was nearly two-thirds of which was coal. The crisis never became a direct military confrontation: the USSR did not try to stop the Western airlift, while the United States avoided forcing a passage through the Soviet blockade. The Soviet Union ended the blockade on 12 May 1949, although accounts differ on the exact date, with some giving May 11, 1949 and others 1 May 1949.

The division became physical on 13 August 1961. Its immediate background was the flight of East Germans to the West. Before the Wall's erection, 3.5 million East Germans circumvented Eastern Bloc emigration restrictions and defected from the GDR, many by crossing over the border from East Berlin into West Berlin. By 1961 an estimated 1,500 people a day were fleeing East Berlin for the West. The GDR government, with Soviet approval, gave permission to close its border for good the day before construction began. Officially, the barrier was presented as an "anti-fascist protection wall" to prevent a third world war. It began as barbed wire and concrete blocks, and was later replaced by a more formidable structure of cement slabs. A second fence followed from 1962, and the strip between the two fences became known as the "death strip," where many would-be escapees met their deaths. Estimates of deaths in and around Berlin during the Wall years range from 136 to more than 200.

The Wall cut through daily life across the city. Transport links that had included railroads and the S-Bahn [suburban railway], which still existed in 1949 were severed, and relatives, friends and neighbours were separated overnight. Its total length around West Berlin was 156.4 kilometres, with 43.7 kilometres of that running along the border between the two halves of the city. West Berlin became an isolated enclave inside East Germany, while East Berlin was developed as the showcase capital of the GDR. The Wall stood for 28 years and fell when, on November 9, 1989, an East German official announced that citizens of the GDR could cross the border as they pleased. Germany reunified on 3 October 1990. The end of Allied rights over the city is dated differently by sources: one places it at reunification in 1990, while another says the four powers formally ended their rights only in 1994.

Reunification and the modern capital

German reunification took effect on 3 October 1990, and the divided city became a single municipality again. The capital question was settled on paper before the government moved. The Unifikation Treaty of 31 August 1990 between the Federal Republic of Germany and the German Democratic Republic declared Berlin to be the capital of the reunified Germany. Where the institutions should actually sit remained contested. Supporters of Bonn pointed out its merits for West German democracy, praised its modesty and warned of the costs.

On 20 June 1991 the Bundestag chose Berlin, but narrowly: 337 Members of the Bundestag voted for Berlin, 320 for Bonn. Berlin's backers argued that the burdens of Unity should be shared between East and West. The Bundesrat, which had first planned to stay in Bonn, decided by majority vote to move to Berlin, too.

Relocation was gradual rather than immediate. Six federal ministries retained their headquarters in Bonn, however, and all ministries have offices in both cities. The move was completed in summer 1999, 50 years after the foundation of the "Bonn Republic" and 10 years after the fall of the Berlin Wall.

The Reichstag and the new parliament

The Bundestag's new home was the Reichstag. It had been ready for an all-German parliament since 1971, but was considered too small and no longer up to date. An architectural competition was launched which was won by Norman Foster. The sources differ on the timetable: one places the start of the second reconstruction phase in 1994, while another gives 1995 as the start of construction. The completion date is also reported inconsistently. The official Berlin site says the first session of the Bundestag in the new Reichstag building took place on 19 April 1999, whereas another account says the Bundestag moved in September 1999.

The glass dome is the most visible change, and its origin is described differently. One account says the architect proposed 27 different roof structures, and the Bundestag finally chose a dome shape between the old and the new. Another says that Foster's original plans did not include a dome; it was only added at the insistence of the German government. The dome was also designed to carry a political message about unity, and it serves a practical function as well: it has a practical one, supplying the plenary chamber below it with light and air.

Reconstruction and integration

Municipal government moved in step with the federal capital. In 1991 the city's executive moved from Schöneberg Town Hall to the Berlin Town Hall ("Red Town Hall") in the Mitte borough. Large building projects followed in the 1990s, including the rebuilding of Potsdamer Platz, the construction of a new government quarter, and the restoration of Mitte as the historic centre. These were carried out alongside the task of joining two urban and economic systems that had developed separately for four decades.

In the eastern half of the city, the transition was harsh. A rigid, top-down policy of quick mass privatizations and shutdowns led to grave conflicts and political debates about the social consequences of dramatically rising mass unemployment and the looming deindustrialization of Eastern Germany. The former East Berlin had reached its highest population in 1988 with 1.28 million. Its industrial base contracted sharply, and the economic pattern became one in which services, public administration, culture and tourism gained weight relative to manufacturing. The eastern districts also benefited from large public transfers, but overall unemployment remains higher than in the former West.

Government and administration

Berlin is both one of Germany's sixteen federal states and a city-state, so its government combines the functions of a regional parliament with those of a municipal administration. Its legislature is the Abgeordnetenhaus (House of Representatives), which elects the Governing Mayor (Regierender Bürgermeister). The Governing Mayor heads the Senate, a cabinet of ministers that runs the state's departments. This arrangement reflects the federal structure of the Republic, in which the states hold significant powers of their own.

Borough administration

The city is divided into twelve boroughs (Bezirke). Each has a district assembly, which is elected, and a district mayor (Bezirksbürgermeister) who leads the district council. Boroughs handle many services that residents deal with directly, such as building permits, youth and social services, and local registration. Major decisions on policing, transport, housing policy, and the budget rest with the state level, so responsibilities are divided between the two tiers.

The 2021 election, the rerun, and the current coalition

The 2021 state election was not allowed to stand. Due to numerous irregularities that took place during the election, the Constitutional Court of the State of Berlin annulled the results in November 2022. As a result, repeat elections were scheduled for the next year. The rerun took place on 12 February 2023, and the CDU won it with 28.2 per cent of the vote, well ahead of the SPD and the Greens, who each won 18.4 per cent.

Following the large gains made by the CDU in the 2023 Berlin state election, Wegner became Berlin's first conservative mayor in 22 years. Kai Wegner took office on 27 April 2023 and has led a CDU–SPD coalition since then, a period in which the Berlin constitutional court and the electoral process have remained central points of public debate.

The 2026 state election

Voters chose the 20th Abgeordnetenhaus on 20 September 2026. Die Linke won the state parliament election with 25.7% of the vote, a significant lead over the other parties. The CDU suffered significant losses, falling to 18.8%. The AfD made strong gains, reaching 16.3%. The Greens followed with 14.3%, and the SPD with 12.1%. The Sahra Wagenknecht Alliance failed to enter the House of Representatives with 4.7% of the vote. Turnout was 74.2 per cent, and Wegner, who has criticism to contend with, was not seeking re-election as mayor.

Reported seat totals differ between sources, with one listing 158 seats and another 153, so this entry uses vote shares only.

Coalition formation remained open at the time of writing. The Left Party, the centre-left SPD and the Greens agreed on measures to address antisemitic incidents, clearing a key hurdle to the start of exploratory coalition talks in the state of Berlin on 8 October 2026. This is an exploratory stage: no coalition agreement or formation of a new government has been announced.

Federal functions in Berlin

Berlin is also the seat of federal institutions. The Bundestag meets in the Reichstag building, and the Bundesrat, through which the states take part in federal legislation, has its seat in the city. The federal ministries, the Chancellery, and the offices of the Federal President are located there, as are the embassies of most foreign states. As a result, Berlin hosts both the state government of a federal state and the national government, which gives the city a dual role in German politics.

Population and society

Berlin is the most populous city in Germany. The Statistical Office for Berlin-Brandenburg recorded 3,917,196 residents on 30 June 2026, which is 14,551 more than a year earlier Juni 2026 insgesamt 3.917.196 Einwohnerinnen und Einwohner und verzeichnet gegenüber dem Vorjahr einen Zuwachs von 14.551 Personen.

Official totals depend on the counting method. The population register listed 3,913,644 residents at the end of 2025, while the census-based series stood at 3,685,265 at the end of 2024 The register and census-based figures were separated by 211,880 people at the end of 2024, enough to equal a midsize German city hiding in the paperwork. According to the Amt für Statistik Berlin-Brandenburg, the resident register counted 3,913,644 people with a main residence in Berlin on 31 December 2025. For the census-based official population series, the latest end-year figure available is 3,685,265 at the end of 2024. Because the two series are built from different sources, they should be read as separate measures rather than competing totals.

Berlin also has a large foreign population. The statistical office counted 972,941 foreign nationals in June 2026, an increase of 1,899 over the previous year Die Zahl an Ausländerinnen und Ausländern war um 1.899 Personen auf 972.941 gestiegen. Election coverage from September 2026 uses a different measure. It described a full quarter — around 976,000 adults — cannot vote because they don't have German citizenship. That number has doubled since 2011. Another campaign piece gave a different breakdown, reporting around one million people living in Berlin do not hold a German passport, 851,000 of whom are adults. The office's figure covers all ages, so it cannot be reconciled directly with the adult counts in election reporting without further data.

The foreign population is unevenly distributed across the twelve boroughs. In Mitte, the office recorded 145,983 foreign nationals, while Pankow had 83,281 foreign nationals alongside 293,809 Germans without a migration background Mitte | 145.983 | 91.502 | 161.020 | Pankow | 83.281 | 51.883 | 293.809. In Charlottenburg-Wilmersdorf, 162,674 residents (47.3%) had a migration background, including 70,189 German citizens with a migration background and the 92,485 foreign nationals. Among origin groups, Turkish residents form the largest ethnic minority, although estimates vary because the official German census does not collect data on ethnicity. Vietnamese residents, at about 1.16 per cent of the population, form Berlin's largest South East Asian community.

Neighbourhoods also differ in age structure. The average age of the borough's population was 45.2 years, the second highest among Berlin's twelve boroughs after Steglitz-Zehlendorf (46.6 years). Household patterns are similarly varied. On 31 December 2024 the city had about 2.2 million private households, 56.5% were one-person homes, according to the statistical office. The average household size was just 1.77 people.

Religious life in Berlin is plural, and Berlin is among the German regions with significant Muslim populations Regions with significant populations - Berlin, Hamburg, North Rhine-Westphalia, Baden-Württemberg, Bavaria, Hesse, Lower Saxony. Protestant, Catholic, Jewish, Muslim, and non-religious communities all coexist in the city. German is the main language of public life, while many other languages are spoken within the city's communities, reflecting the multilingual character of its population.

Economy and labour market

Services dominate Berlin's economy. In June 2024, about 1.5 million employees paying social insurance contributions worked in the city, close to 88 percent of all such employees. Germany's capital also depends heavily on public administration, tourism and creative industries. In 2023, about 224,800 people, or 10.3 percent of those in work, were employed in tourism-related sectors, mainly in accommodation, the convention trade and cultural and creative employers. The city's economic output was about 207 billion euros in 2024. Real GDP grew by 0.8 percent that year, slower than the 1.6 percent of 2023, while employment rose by 0.3 percent, slightly above the national average.

Berlin is also the leading centre of German venture capital and startup activity. Berlin-based companies received 2.7 billion euros in 2025, about 32 percent of the venture capital invested in German startups, and the city recorded 218 financing rounds, the most of any German location. Software and analytics attracted the most money, followed by fintech and insurtech, energy and health. Other sources give different figures: one comparison reports that Bavarian startups raised more than Berlin's roughly 2.2 billion euros in 2025, so totals depend on the data provider and the definition used. Berlin also relies more on foreign capital for early-stage financing than several other European hubs, and in AI and fintech it competes directly with London and Paris.

Manufacturing is a smaller part of the economy than it was in the early twentieth century. Its remaining firms are concentrated on the city's outskirts and produce electronics, pharmaceuticals, optical goods and food. The OECD estimates that sectors with high emissions, such as transport, mining, chemicals and plastics, and other manufacturing, account for only about 0.8 percent of Berlin's employment. This is the lowest share of any German state and well below the OECD average of 2.2 percent, which suggests limited exposure to the net-zero transition. The same OECD study notes that Berlin, like the other large metropolitan areas it examined, has lost middle-skill jobs in relative terms since 2000.

Unemployment remains a persistent problem. In August 2026, Berlin's registered unemployment rate stood at 10.6 percent, compared with 8.1 percent for eastern Germany and 6.1 percent for western Germany. The nationwide seasonally adjusted rate was 6.3 percent in February 2026, a level that the Federal Employment Agency's head linked to three years of weak economic activity. Berlin's registered rate reached a record high of 19.7 percent in April 2005 and a record low of 7.6 percent in November 2019. Other measures produce higher figures; a comparison with Frankfurt, for example, cites 12.2 percent for Berlin, so the choice of indicator matters when comparing the city with the national average. Commentators often link the persistent gap to post-reunification deindustrialisation in the east of the city, to skills mismatches between jobseekers and vacancies, and to the continued pull of a large services labour pool.

Public finances and employment rates have been central to political debate about the city's economic future. The state budget, the cost of public services and the pace of job creation recur in discussions of the labour market, and they shape how the state government and the boroughs set priorities for training, business support and public employment.

Transport and infrastructure

Berlin's public transport is a mix of rapid transit, surface transport and regional rail. The infrastructure is run by two organisations. The U-Bahn has nine lines and 175 stations along roughly 155 km of track. With its nine lines, the subway in Berlin runs along a network of approximately 155 kilometers and 175 stations. The municipally owned Berliner Verkehrsbetriebe (BVG) runs the underground, tram, bus, replacement services and ferry networks. The S-Bahn is a separate system: it is operated by S-Bahn Berlin GmbH, a subsidiary of Deutsche Bahn. Its lines extend beyond the city boundary into Brandenburg, reaching as far as Potsdam (unlike the U-Bahn, the S-Bahn crosses Berlin city limits into the surrounding state of Brandenburg, e.g. to Potsdam).

Although two companies run the rapid-transit networks, fares are unified across them. Although the S- and U-Bahn are part of a unified fare system, they have different operators. Tram lines are concentrated in the eastern half of the city, while buses serve districts without a direct U-Bahn connection. Trams are particularly widespread in the east of Berlin. Buses are ideal for districts without a direct subway connection. Service patterns also change over the day: on weekends the U-Bahn runs continuously, while on weekdays night buses marked with an "N" take over overnight services.

Berlin Hauptbahnhof is the most important node in the rail system. Construction on the site of the former Lehrter Bahnhof, which had been destroyed in the Second World War, took about eleven years before the station opened on 28 May 2006. It was opened on May 28, 2006 after around eleven years of construction on the site of the former Lehrter Bahnhof, which was destroyed in the Second World War and demolished in the 1950s. The station brings together long-distance, regional, and S-Bahn trains, and it serves as a national hub for high-speed services. The city's official tourism site calls it the largest interchange station in Europe, a claim that appears in travel sources as well. Figures for its traffic vary between sources: one travel guide cites approximately 1,000 trains stopping daily on 14 platforms across two levels, while another gives approximately 1,800 trains per day travel in and out of the busy station, with a total of about 350,000 passengers each day.

Air travel was reorganised in 2020. Berlin's airport plan dates back to the post-reunification period, when the city had three airports. Berlin Brandenburg Airport was intended to replace the older Tegel and Schönefeld sites, which were judged inadequate for projected air traffic, and its opening was postponed by technical problems, planning errors and disputes. Its opening was postponed due to various issues such as technical problems, planning errors and controversies. The airport began commercial operation on 31 October 2020, although 14 years after construction started and 29 years after official planning was begun. Schönefeld's refurbished terminals became Terminal 5 of the new airport. Tegel's last commercial flight took place on 8 November 2020, and its formal closure as an airfield followed in May 2021 (its official closure as an airfield occurred on May 4, 2021). Tempelhof had already stopped handling flights in 2008.

Rail links to the airport run through the regional and suburban network. From the terminal, passengers can take the S-Bahn (S9, S45), the Airport Express (FEX) or various regional trains (RB, RE) into the city. Ongoing planning reflects the city's long-term priorities. In 2023, a BVG long-range planning initiative with the working title Express Metropolis Berlin was examining a U4 extension from Nollendorfplatz to the main station. In March 2023, an internal document revealed that the BVG (Berlin Transport Authority) was considering the previously planned route as part of a potential expansion of the U4 subway line as part of its future planning initiative BVG 2050+ (working title: Express Metropolis Berlin). The 2023 coalition agreement limited the initial study of a U11 extension to the section from Alexanderplatz to Marzahn (only the section from Alexanderplatz to Marzahn would be examined in more detail initially).

Urban form, architecture, and planning

Berlin's built environment is a layered record of successive political systems, and neighbouring districts often differ sharply in style and density. The oldest surviving layer is Baroque and classicist. Prussian palaces, gardens and public monuments such as Charlottenburg Palace were commissioned by the Hohenzollern court and state, and neoclassical buildings by Karl Friedrich Schinkel shaped the centre in the early nineteenth century.

The bulk of the inner city, however, came from the Gründerzeit building boom after German unification in 1871. Builders and speculators filled blocks laid out under James Hobrecht's development plan of 1862 with Mietskasernen, multi-storey tenement blocks organised around a sequence of courtyards. A street-facing front house with a representative facade was linked by side wings to rear buildings, and apartments further back received less light and air, with the poorest households usually living there. A particularly intense construction phase between 1895 and 1913 produced much of this fabric, and the tenement's density later became the central target of housing reform and public health criticism.

Weimar Berlin pursued a different model. From 1925 the chief city planner Martin Wagner led a program of subsidised modernist estates, and the building society GEHAG, which he founded in 1924, was responsible for roughly seventy percent of the housing built in Berlin between 1924 and 1933. Architects such as Bruno Taut and Walter Gropius designed open, light-filled blocks, and seven of these estates were inscribed as a UNESCO World Heritage Site in 2008. Nazi-era monumental architecture, by contrast, aimed at grand axial display, and few of its planned projects were completed.

The Second World War and the postwar decades caused the largest rupture. Heavy bombing destroyed large parts of the city, and many surviving buildings were demolished in the 1950s and 1960s under municipal programmes for new housing, commercial development and road construction. In West Berlin, the Interbau exhibition of 1957 rebuilt the Hansaviertel, a district close to the Tiergarten, with buildings by international modernists including Alvar Aalto, Walter Gropius, Egon Eiermann and Oscar Niemeyer. In East Berlin, the state built large-panel housing estates, known as Plattenbauten, while the Palace of the Republic, the GDR's parliament and cultural building, was demolished in 2006 after a long debate. The Kulturforum, by contrast, took shape mainly in the 1960s and 1970s around Hans Scharoun's Philharmonie, which dates from 1963 and not from the post-1990 period.

After 1990, the redevelopment of Potsdamer Platz became the emblematic project. The square had been one of Europe's busiest intersections before the war, was destroyed in the fighting, and was later bisected by the Berlin Wall. Construction began in 1994, and for many years the site was one of Europe's largest construction areas. A masterplan by Heinz Hilmer and Christoph Sattler guided projects by several internationally known architects, and the Sony Center, designed by Helmut Jahn, opened in 2000. Residential districts remain varied: dense inner-city blocks in areas such as Kreuzberg and Prenzlauer Berg contrast with suburban estates and garden-city settlements on the outskirts, such as the Gartenstadt Falkenberg.

Planning debates in recent decades have centred on three issues: how to increase housing supply without eroding the city's character, whether and how to reconstruct historic street patterns and buildings (the rebuilt Berlin Palace, which houses the Humboldt Forum, is the best-known example), and how far to preserve Cold War socialist housing and modernist buildings that many residents value.

Arts, music, and nightlife

Berlin's classical life is unusually dense. The division of the city after 1945 left it with more music theatres than Madrid, Rome, or London — wait, no. I'll keep the comparison precise: the partition produced two rival state-funded houses on each side of the Wall. The Deutsche Oper stood in the West, while the Komische Oper and the Staatsoper stood in the East, and the city still keeps all of them. The Staatsoper Unter den Linden, which opened as a court opera in 1742, is the home of the Staatskapelle Berlin, an ensemble counted among the oldest orchestras in the world and tracing its roots to 1570. The city's orchestral scene also includes the Berlin Philharmonic, whose concerts draw international audiences.

Beyond the classical repertoire, Berlin hosts a varied independent music world that runs from jazz to electronic music, and many of its smaller venues favour experimental and crossover programming.

The Berlinale, the Berlin International Film Festival, has Cold War roots. A film officer with the US military stationed in West Berlin, Oscar Martay, conceived the event, and it opened in June 1951. Since 1978 it has taken place each February. The festival now shows roughly 400 films across nine sections, and it belongs to the group of three leading European festivals alongside Venice and Cannes. Over the decades it has become one of the most politically engaged film festivals in the world, a trait shaped by the city's divided past. Theatre and literature draw on the same political history: the postwar period produced companies such as the Berliner Ensemble, founded by Bertolt Brecht in 1949, and Weimar-era cabaret and writing remain part of the city's cultural memory. Film and theatre appear here as continuing traditions rather than as isolated events.

Berlin's club and techno culture is the most widely recognised strand of its nightlife. Its roots lie in the scene that emerged in the 1990s, when unused buildings in the former East were turned into temporary venues. Berghain brings together several developments from post-reunification Berlin: temporarily available spaces, techno, queer club culture, the repurposing of former industrial buildings. The club opened in 2004 in a former power plant in Friedrichshain, and it is now often described as a global centre of the techno scene. Its reputation rests on its uncompromising sound and its strict door policy, which is itself part of the club's myth. Other clubs in the city are known for different sounds; Tresor, for example, is associated with Detroit techno. Many of the best-known venues apply selective entry rules to keep each night's crowd consistent with its music and setting.

Street art, galleries, and independent artist spaces cluster in districts such as Kreuzberg and Neukölln. These neighbourhoods attract both residents and visitors, and they connect the city's visual arts scene with its everyday street life, extending the reach of the arts beyond formal institutions.

Museums, heritage, and memory

Berlin's most concentrated museum landscape is Museum Island, a group of buildings on the northern part of the Spree island in the historic centre. The complex was built between about 1830 and 1930 on the orders of the Prussian kings, to designs by several architects. It includes the Altes Museum, the Neues Museum, the Alte Nationalgalerie, the Bode-Museum and the Pergamon Museum. UNESCO added the ensemble to the World Heritage List in December 1999. The justification stressed two points: the buildings show how museum architecture developed over more than a century, and the complex is an outstanding example of the art museum as a social and democratic institution. Because the inscription also covers the collections and how they are displayed, the site's status shapes the ongoing renovation of the buildings under the Museum Island Master Plan, which was drafted in 1999 and aims to present the collections to modern exhibition standards while respecting heritage rules.

The collections are managed by the Staatliche Museen zu Berlin, which are overseen by the Prussian Cultural Heritage Foundation and funded jointly by the federal government and the states. They comprise seventeen museums in five clusters, along with research institutes and libraries. The Museum Island draws about 2.5 million visitors a year, and a visitor gateway, the James-Simon-Galerie, opened there in 2019. The site is one of the main reasons the city is seen as a centre of cultural heritage and museum culture, and its buildings are also studied as examples of architecture from the nineteenth and early twentieth centuries.

Memory of the twentieth century is not confined to one district but spread across the city. Memorials commemorate the Holocaust, the Nazi persecution of political opponents, the Berlin Wall and the repression carried out under Soviet occupation and in the German Democratic Republic. The Berlin-Hohenschönhausen Memorial is housed in a former remand prison of the Stasi, the East German Ministry for State Security, at Genslerstraße. Soviet authorities used the site after 1945, and between 1945 and 1989 more than 20,000 people were imprisoned there. The memorial has been open to visitors since July 2000, and guided tours are often led by former political prisoners and historians. Other sites include the Berlin Wall Memorial on Bernauer Straße, the East Side Gallery, the Tränenpalast, and the Stasi Museum at Normannenstrasse, which documents the work of the former secret police.

Several landmarks have become symbols of the city's modern history. The Brandenburg Gate and the Reichstag building represent German unity and the political life of the capital, while surviving stretches of the Wall stand for the division of the Cold War years. Together they connect the city's architecture with the political meaning that visitors and residents attach to it.

Museums, archives and historic houses document the successive regimes that shaped Berlin: the Prussian monarchy, the imperial period, the Weimar Republic, the Nazi dictatorship and the divided city. How these periods are presented, and how much space each receives, remains an active subject of historical research and public debate. The Berlin state government funds a number of dedicated institutions for this purpose, including the Haus der Wannsee-Konferenz, the Stiftung Berliner Mauer and the Stiftung Gedenkstätte Deutscher Widerstand.

Science, higher education, and medicine

The Berlin-Brandenburg capital region is one of the most prolific centers of higher education and research in the world. Within it, the city has the densest cluster of institutions: it holds the largest concentration of universities and colleges in Germany. Its public research universities are supplemented by 27 private, professional and technical colleges, which cover a wide range of disciplines.

Humboldt University of Berlin is the oldest of the city's universities. Sources date its founding slightly differently. Britannica places the founding in 1809–10, when Wilhelm von Humboldt was Prussian minister of education, while other accounts use 1810, the year the institution opened as the University of Berlin. Its founding principles tied research to teaching and protected academic freedom. Professors were responsible for curricula and free to pursue knowledge according to their own lines of inquiry, while students were free to shape their own education. Later universities in the West adopted this template, since the Humboldtian model served as the model for modern universities throughout the western world. One profile counts twenty-nine Nobel Prize winners among its former students.

Free University of Berlin was established later, in response to political control over teaching. The catalyst was the politically motivated restriction of academic freedom in the Soviet Area after World War II. A group of students and scholars, with support from the American allies, founded it in the western part of the city on 4 December 1948. Today its main campus is in Dahlem, and it is one of thirteen leading German universities currently designated a "University of Excellence". The Technical University of Berlin (TU Berlin) focuses on engineering, natural sciences, planning and economics, and is regarded as the largest technical university in Germany.

Enrolment figures differ by source and year. One profile gives about 32,000 students at Humboldt, while another reports more than 35,000 students there. Free University figures range from 34,000+ in one fact sheet to 38,539 (2022) in another. Across the city, 40 Nobel Prize winners are affiliated to the Berlin-based universities, according to one overview.

Charité – Universitätsmedizin Berlin traces its origins to 1710 and is the largest university hospital in Europe. It has served as the shared medical faculty of the Free University and Humboldt University since 2003. The complex spreads over four campuses and includes around 3,000 beds. Reported student numbers range from approximately 8,000 to 9,485, depending on the source. Its historical reputation rests on pioneers such as Rudolf Virchow, who founded cellular pathology, and Robert Koch, who developed vaccines for anthrax, cholera, and tuberculosis. According to the hospital's own account, it lays claim to more than half of all German Nobel Prize winners in Physiology or Medicine.

Research is organised through partnerships as well as individual institutions. Since 2019, the Free University has been funded as a university of excellence through the Berlin University Alliance, whose application was submitted by four partners: the Free University, Humboldt University, the Technical University and Charité. The Max Planck Society and the Helmholtz Association also run research institutes in the city. At the Berlin-Buch campus, the Charité cooperates closely with the Max Delbrück Center for Molecular Medicine and runs a university centre for translational clinical research. A further link is the Berlin Institute of Health, founded in 2013 through an agreement of the Federal Ministry for Research and Technology and the Senate of Berlin, which gives the Max Delbrück Center and Charité a joint platform for clinical research.

Challenges and open questions

Housing has been one of the most contested issues in Berlin's recent politics. Ahead of the 2026 state election, a Reuters report noted that the city will need 211,000 more homes by 2040. Asking rents have also climbed sharply since the previous rent cap was struck down. The Federal Constitutional Court overturned the rent cap back in 2021, and an ifo Institute study later estimated that starting from 2023, they are 10 to 15 percent higher than the level that would be expected in the absence of the rent cap and expropriation debate. The same study found that purchase prices have risen more slowly than rents, and that new construction and renovation have declined, especially among large providers.

The policy responses reflect sharply different views. The Senate extended the city's rent brake until the end of 2029, and the Left and Greens supported the extension while arguing that it doesn't go far enough to protect tenants. The Left's platform includes a one-year rent freeze and forcibly reduce rents that are 20% over the local average. The CDU instead emphasises home ownership and expropriation is strictly rejected. A study by economists close to the trade-union-affiliated Hans Böckler Foundation has argued that socialising large housing companies could be economically viable, which feeds into a debate over whether such measures would slow rent increases.

Public finances and large infrastructure projects form a second set of persistent problems. Berlin Brandenburg Airport illustrates the pattern: it finally opened on 31 October 2020. The cost grew from a 2006 estimate of about EUR 2bn to a final outturn of about EUR 7.3bn. The operating company's debt also weighed heavily on its owners, which include the federal government and the states of Berlin and Brandenburg. At the end of 2019, FBB owed banks and its owners €4.1 billion, compared with €416 million of revenues in 2019 from Schoenefeld and Tegel. The episode has shaped public expectations about how the state handles large projects and budgets, and backlogs in roads, bridges, rail and digital networks remain a central concern for the state government.

Integration of a large and diverse population is a further open question. Many residents do not hold German citizenship, and their access to education, employment and local services is a central issue for city government. Migration has also become politically charged. The AfD has linked the housing crisis to its argument for restricting immigration, which has fed into its argument for restricting immigration. Municipal policy in this area therefore depends on both practical provision and wider debates about social cohesion.

The 2026 state election, held on 20 September, set the terms for how these challenges will be handled. The Left won the largest share, with 25.7% of the vote, a significant lead over the other parties. The CDU fell to 18.8%, and the AfD reached 16.3%. The result allows for two possible coalitions: a left-wing coalition comprising The Left, the Greens and the SPD, or a centre-left coalition comprising the CDU, the SPD and the Greens. Negotiations were still under way at the time of writing, and the choice between these options will largely determine the approach to rents, public spending and climate policy. Heat stress, drought and water management are also growing concerns as climate change affects the city, and the outcome of coalition talks will shape how these policies are pursued.

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88. Allied-occupied Germanyen.wikipedia.org
89. Berlin (September 1, 1945)germanhistorydocs.org
90. Germany's post WWII occupationebsco.com
91. The Berlin Airliftorigins.osu.edu
92. BMI - Capital City - Our Capital Citybmi.bund.de
93. Reichstag - Orte der Einheitorte-der-einheit.de
94. Bundestag session in 1991/Debate on seat of government/Votebundesregierung.de
95. The german Federal Governmentdeutschland.de
96. Reichstag, Berlinaviewoncities.com
97. Reichstagberlin.de
98. The new Berlinberlin.de
99. Full article: In from the socialist “cold,” but burned by the capitalist “heat”? The dynamics of political revolution and economic transformation in Eastern Germany after 1990tandfonline.com
100. East Berlinen.wikipedia.org
101. German reunificationen.wikipedia.org
102. Reichstag domeen.wikipedia.org
103. Berlin-Bonn Acten.wikipedia.org
104. 2021 Berlin state electionen.wikipedia.org
105. Kai Wegneren.wikipedia.org
106. Berlin Election: Die Linke Are Clear Winners - The Berlinerthe-berliner.com
107. 2026 Berlin state electionen.wikipedia.org
108. Berlin's Left Party, SPD and Greens Agree Exploratory Coalition Talks, Reports Sayusnews.com
109. Three parties agree to begin Berlin coalition talks — Vzglyad.uzvzglyad.uz
110. Far left wins Berlin state election, far-right AfD in Germany’s northeastaljazeera.com
111. Berlin Election Results: Every Vote Since 1945politpro.eu
112. 2023 Berlin state electionen.wikipedia.org
113. Einwohnerbestand in Berlinstatistik-berlin-brandenburg.de
114. Berlin Population Facts: Size, Density, and Changefactsaboutberlin.com
115. Berlin, Elections Still Closed to Foreignersportside.org
116. Berlin Wiki: Election Daywahlheymat.de
117. Charlottenburg-Wilmersdorfen.wikipedia.org
118. Turks in Berlinen.wikipedia.org
119. Vietnamese community of Berlinen.wikipedia.org
120. Islam in Germanyen.wikipedia.org
121. Economic development - Berlin.deberlin.de
122. Berlin has established itself as an important European hub for the services industries.businesslocationcenter.de
123. An economic factor for Berlinabout.visitberlin.de
124. Berlin Startup Ecosystem Report 2025berlin-partner.de
125. Venture capital and incubators in Berlinbusinesslocationcenter.de
126. Berlin as a Startup Hubwp.nyu.edu
127. 3. The impact of the future of work on Berlin’s labour marketoecd-ilibrary.org
128. Registered Unemployment Rate: East Germany: Berlinceicdata.com
129. Germany’s Unemployment Rate Stalls at 6.3%tradingeconomics.com
130. Unemployment rate: how does Berlin compare to Frankfurt?versus.com
131. Subway (U-Bahn)berlin.de
132. Berliner Verkehrsbetriebeen.wikipedia.org
133. Berlin S-Bahnen.wikipedia.org
134. Means of transportation and tariff zones - Berlinbvg.de
135. Berlin Hauptbahnhofberlin.de
136. Berlin Hauptbahnhof in Berlinmindtrip.ai
137. Hauptbahnhof Main railway station - Berlinaviewoncities.com
138. Berlin Brandenburg Airport to open in October 2020airport-technology.com
139. Berlin Brandenburg Airporten.wikipedia.org
140. Tegel Airport: Officially Closed, Not Forgottenaviationfile.com
141. FAQ for touristsbvg.de
142. U11 (Berlin U-Bahn)en.wikipedia.org
143. Berlin Hauptbahnhofen.wikipedia.org
144. Berlin U-Bahnen.wikipedia.org
145. Berlin Modernism Housing Estatesen.wikipedia.org
146. Martin Wagner (architect)en.wikipedia.org
147. Hansaviertelarchitectuul.com
148. Hansaviertel Buildings, IBA Berlin-Tiergarten - e-architecte-architect.com
149. Architecture of Berlinen.wikipedia.org
150. Mietskasernede.wikipedia.org
151. Gründerzeitviertelde.wikipedia.org
152. (PDF) The Industrious, the Laboring, and the Sunken: Berlin’s Mietskaserne and the Housing Questionresearchgate.net
153. Potsdamer Platz, Berlinaviewoncities.com
154. Potsdamer Platzen.wikipedia.org
155. The Center Potsdamer Platzen.wikipedia.org
156. Postdamer Platzrpbw.com
157. Staatskapelle Berlinen.wikipedia.org
158. Berghain Berlin: History, Door Policy & the Myth Behind the Clubnotouristinfo.com
159. Berlin International Film Festivalen.wikipedia.org
160. Berlin International Film Festivalbritannica.com
161. Berlin State Opera Staatsoper Unter den Lindenddr-museum.de
162. Berlin Club Cultureberlin.de
163. Berghainberlin.de
164. Berlinale 2027visitberlin.de
165. Museumsportal Berlin - Eventmuseumsportal-berlin.de
166. UNESCO World Heritage - Berlinpreussischer-kulturbesitz.de
167. Museumsinsel Berlinsmb.museum
168. Museum Islanden.wikipedia.org
169. Staatliche Museen zu Berlinen.wikipedia.org
170. Overview of the Collections on the Museum Islandmuseumsinsel-berlin.de
171. Berlin-Hohenschönhausen Memorialberlin.de
172. Berlin-Hohenschönhausen Memoriallangenachtdermuseen.berlin
173. Berlin Wallvisitberlin.de
174. Memorials and sites of remembrance - Berlin.deberlin.de
175. Universities and research institutions in Berlinen.wikipedia.org
176. Humboldt University of Berlinbritannica.com
177. Higher education postcard: Humboldt University of Berlinwonkhe.com
178. Humboldt University of Berlin - New World Encyclopedianewworldencyclopedia.org
179. Berlin's Prestigious Humboldt University - Walled In Berlinwalled-in-berlin.com
180. Freie Universität Berlin（A public university in Berlin, Germany.）_Baiduwikibaike.baidu.com
181. Free University of Berlinen.wikipedia.org
182. Universities in Berlinbusinesslocationcenter.de
183. Berlin, University of (Humboldt University) - Overviewstudyguides.com
184. Free University of Berlin: Rankings, Fees, Courses, Admission 2026, Requirements & Scholarshipsshiksha.com
185. Charit%C3%A9en.wikipedia.org
186. Charité Universitatsmedizin Berlinglobalhealth.northwestern.edu
187. Charité - Universitätsmedizin Berlin (2026/27)mygermanuniversity.com
188. Charité - Universitätsmedizin Berlindevex.com
189. Freie Universität Berlin • FUBiSfubis.org
190. Charité Berlinberlin-health-excellence.com
191. Detlev Gantenen.wikipedia.org
192. Campus Berlin-Buchen.wikipedia.org
193. Berlin’s acute housing shortage and soaring rents dominate city electionwsau.com
194. Rent Cap and Expropriation Debate Exacerbate Berlin’s Housing Crisisifo.de
195. Berlin Senate extends rent brake through 2029 - The Berlinerthe-berliner.com
196. 2026 Berlin Election: A Comparison of the Parties’ Housing Policiesengelvoelkers.com
197. Berlin Brandenburg Airport (BER): 9 Years Late, EUR 7B Over Budgetbudgetoverrun.com
198. Berlin’s delayed airport to finally take offpressreader.com
199. Berlin 2026: Elections to the House of Representatives and the District Councilseu.boell.org
200. Berlin: Could Socializing Housing Actually Slow Rent Increases?berlinspectator.com