Berlin became the capital of reunified Germany on October 3, 1990, after the fall of the Berlin Wall in November 1989. The city contains 3.7 million residents within its administrative boundaries, making it the most populous city in Germany and the most populous city in the European Union by city proper population. Berlin covers 891.7 square kilometers, roughly nine times the area of Paris. The federal government transferred from Bonn to Berlin in 1999, though some ministries maintain offices in the former capital. Berlin sits in the northeastern region of Germany, approximately 70 kilometers west of the Polish border, on the banks of the River Spree. The city elevation averages 34 meters above sea level, positioned in the glacial valley of the Urstromtal formed during the last ice age.
Berlin operates as both a city and a federal state, one of three city-states in Germany alongside Hamburg and Bremen. The city divides into twelve boroughs (Bezirke): Mitte, Friedrichshain-Kreuzberg, Pankow, Charlottenburg-Wilmersdorf, Spandau, Steglitz-Zehlendorf, Tempelhof-Schöneberg, Neukölln, Treptow-Köpenick, Marzahn-Hellersdorf, Lichtenberg, and Reinickendorf. Each borough maintains its own local administration under the overarching city government. The Governing Mayor (Regierender Bürgermeister) heads the Senate of Berlin, the executive body of the city-state. The Berlin House of Representatives (Abgeordnetenhaus) forms the legislative branch, with 147 members elected every five years. Berlin sends four representatives to the Bundesrat, Germany's federal legislative upper house.
The Brandenburg Gate stands 26 meters tall at Pariser Platz in the Mitte borough. Carl Gotthard Langhans designed the neoclassical monument, completed in 1791 during the reign of King Frederick William II of Prussia. The gate originally served as one of eighteen city gates in the Berlin customs wall. Johann Gottfried Schadow created the Quadriga sculpture atop the gate in 1793, depicting the goddess Victoria driving a four-horse chariot. Napoleon removed the Quadriga to Paris in 1806 after defeating Prussia; Prussian forces returned it to Berlin in 1814. The Berlin Wall stood directly behind the gate from 1961 to 1989, placing the monument in the restricted border area between East and West Berlin. United States President Ronald Reagan delivered his "Tear down this wall" speech at the Brandenburg Gate on June 12, 1987.
The Reichstag building houses the Bundestag, the German federal parliament. Paul Wallot designed the original structure, which opened in 1894 during the German Empire. The building burned on February 27, 1933, in an incident the Nazi government used to consolidate power through the Reichstag Fire Decree signed the next day. Soviet forces raised their flag over the damaged building on May 2, 1945, marking the fall of Berlin in World War II. British architect Norman Foster led the reconstruction completed in 1999, adding a glass dome 23.5 meters high and 40 meters in diameter above the parliamentary chamber. Visitors can walk up a spiral ramp inside the dome to a viewing platform 50 meters above ground level. The dome operates with 360 mirrors that redirect natural light into the chamber below and provide ventilation through a central funnel. Public access to the dome requires advance registration through the Bundestag visitor service.
Museum Island (Museumsinsel) occupies the northern portion of Spree Island in the Mitte borough. UNESCO designated the complex a World Heritage Site in 1999. The island contains five museums: the Altes Museum completed in 1830, the Neues Museum completed in 1855 and reconstructed in 2009, the Alte Nationalgalerie opened in 1876, the Bode Museum opened in 1904, and the Pergamon Museum opened in 1930. Karl Friedrich Schinkel designed the Altes Museum in the neoclassical style to house the Prussian royal art collection. The Neues Museum displays Egyptian artifacts including the bust of Nefertiti, a limestone sculpture dated to approximately 1345 BCE. British architect David Chipperfield reconstructed the war-damaged building, preserving visible damage to walls while inserting modern materials where sections were destroyed. The Pergamon Museum houses large-scale archaeological reconstructions including the Pergamon Altar from the ancient Greek city, the Market Gate of Miletus from the 2nd century CE, and the Ishtar Gate from Babylon dated to approximately 575 BCE. The Pergamon Museum will close sections progressively until 2037 for comprehensive renovation, with the main hall containing the Pergamon Altar scheduled to reopen in 2027.
The Berlin Wall divided the city from August 13, 1961, until November 9, 1989. The barrier extended 155 kilometers total, with 43 kilometers cutting through urban Berlin and 112 kilometers separating West Berlin from the surrounding East German territory. The fortified border zone in its final configuration included a concrete wall 3.6 meters high, a parallel inner wall, a death strip (Todesstreifen) between the walls containing sand to show footprints, vehicle barriers, floodlights, watchtowers, and armed guards authorized to shoot those attempting to cross. East German records document 140 people killed at the Berlin Wall, though the actual number likely exceeds this figure. The Berlin Wall Memorial (Gedenkstätte Berliner Mauer) on Bernauer Strasse preserves a 1.4-kilometer section of the border fortifications in their final state. The Documentation Center at the memorial includes a viewing platform and exhibition space opened in 2014. The East Side Gallery on Mühlenstrasse contains 1.3 kilometers of the wall painted with murals by 118 artists from 21 countries in 1990, including Dmitri Vrubel's "My God, Help Me to Survive This Deadly Love" depicting the 1979 kiss between Soviet leader Leonid Brezhnev and East German leader Erich Honecker.
Checkpoint Charlie stood at the intersection of Friedrichstrasse and Zimmerstrasse as the most prominent border crossing between the American and Soviet sectors during the division. The United States Army established the checkpoint in August 1961, naming it the third checkpoint alphabetically after Checkpoint Alpha at Helmstedt and Checkpoint Bravo at Dreilinden. Soviet and American tanks faced each other at this location on October 27, 1961, in a sixteen-hour standoff over border access rights during heightened Cold War tensions. Allied forces removed the checkpoint booth on June 22, 1990, before formal German reunification. A replica booth stands at the original location surrounded by photographs depicting the checkpoint's history. The Checkpoint Charlie Museum (Mauermuseum) opened in 1963 in a building immediately adjacent to the crossing, displaying escape attempts and Cold War history through artifacts and documentation.
Berlin Hauptbahnhof opened on May 26, 2006, as Europe's largest crossing railway station measured by platform area. The station design by Meinhard von Gerkan places two levels of tracks perpendicular to each other: an elevated east-west line 10 meters above street level and an underground north-south line 15 meters below street level. The glass and steel structure reaches 46 meters high and covers 321,000 square meters of floor space. Approximately 300,000 passengers use the station daily on regular services operated by Deutsche Bahn and regional transport authorities. High-speed ICE trains connect Berlin to Munich in approximately four hours, to Hamburg in under two hours, and to Frankfurt in four hours. International services link Berlin to Amsterdam, Paris, Vienna, Warsaw, and Prague through direct trains.
The public transport network operated by Berliner Verkehrsbetriebe (BVG) and S-Bahn Berlin carries approximately 3 million passengers daily across the metropolitan area. The U-Bahn metro system consists of nine main lines and two short lines totaling 146 kilometers of track and 173 stations. The first U-Bahn line opened on February 15, 1902, running elevated between Stralauer Tor and Potsdamer Platz. The S-Bahn suburban rail network operates 16 lines across 340 kilometers with 166 stations within Berlin. The integrated fare system divides Berlin into zones A, B, and C, with zone A covering the central area inside the Ringbahn circular railway, zone B extending to the city limits, and zone C including Potsdam and the outer suburbs. A single ticket for zones AB costs €3.20 as of 2024. The network operates 24 hours on weekends, with limited night bus and tram services replacing metro trains on weekdays.
Berlin Tegel Airport closed on November 8, 2020, after Berlin Brandenburg Airport opened on October 31, 2020. The new airport sits 18 kilometers southeast of the city center in Schönefeld. Construction began in 2006 with an original opening date of October 2011, but technical failures in the fire safety system, insolvency of contractors, and planning errors delayed completion for nine years. The main terminal building designed by Gerkan, Marg and Partners covers 360,000 square meters. The airport handled 10 million passengers in 2022, below its design capacity of 27 million annual passengers. The Airport Express train (FEX) connects the airport terminals to Berlin Hauptbahnhof in 30 minutes, departing every 30 minutes during daytime hours.
Alexanderplatz forms the commercial center of the Mitte borough, named after Russian Tsar Alexander I who visited Berlin in 1805. The square underwent extensive redesign in the 1960s under East German planning, creating a 8.9-hectare pedestrian plaza surrounded by modernist buildings. The Fernsehturm (television tower) stands 368 meters tall at Alexanderplatz, constructed between 1965 and 1969 as the tallest structure in Germany. The observation deck at 203 meters elevation provides views across Berlin on clear days extending 40 kilometers. The rotating restaurant at 207 meters completes one rotation every 30 minutes. The tower's sphere created an unintended reflection pattern: sunlight produces a cross-shaped light pattern on the steel dome, which West Berliners nicknamed the "Pope's Revenge" (Rache des Papstes) in reference to the officially atheist East German government.
Potsdamer Platz transformed from a destroyed no-man's-land during the division to a commercial district rebuilt after reunification. The square stood at the junction of British, American, and Soviet sectors, split by the Berlin Wall with the eastern portion inside East Berlin. Before World War II, Potsdamer Platz ranked among Europe's busiest traffic intersections and contained hotels, department stores, and entertainment venues. Allied bombing and the Battle of Berlin in 1945 reduced the area to rubble. After reunification, Daimler-Benz and Sony purchased large parcels at Potsdamer Platz for commercial development. Renzo Piano designed the Daimler Quarter completed in 1998, while Helmut Jahn designed the Sony Center with its distinctive tensile fabric roof completed in 2000. The Berlin International Film Festival (Berlinale) uses theaters at Potsdamer Platz for screenings during the annual event each February, which showed 270 films to 300,000 attendees in 2024.
The Memorial to the Murdered Jews of Europe covers 19,000 square meters near the Brandenburg Gate, designed by architect Peter Eisenman and completed in 2005. The memorial consists of 2,711 concrete slabs (stelae) of varying heights arranged in a grid pattern on undulating ground. The slabs range from 0.2 meters to 4.7 meters in height. An underground information center beneath the memorial documents the persecution and murder of European Jews through individual biographies, letters, and diary entries. The memorial does not include explicit explanatory text at ground level, leaving interpretation to visitors. Political debate over the memorial's design and necessity extended from the Bundestag's 1999 authorization through the construction period.
The Berlin Cathedral (Berliner Dom) stands on Museum Island in the Mitte borough. Julius Raschdorff designed the current baroque revival structure, completed in 1905 during the reign of Kaiser Wilhelm II to replace an earlier cathedral on the same site. The main dome rises 98 meters above ground level and originally featured more elaborate decorative elements removed during 1970s reconstruction of war damage. The Hohenzollern Crypt beneath the cathedral contains 94 burial sites of the Prussian royal and German imperial dynasty, including the sarcophagi of Friedrich I, the first King in Prussia crowned in 1701, and Friedrich Wilhelm I. Visitors can climb 270 steps to the dome walkway at 50 meters height. The cathedral operates as a functioning Protestant church within the Evangelical Church in Germany while maintaining museum areas open to visitors for an admission fee of €10 as of 2024.
Charlottenburg Palace (Schloss Charlottenburg) in the Charlottenburg-Wilmersdorf borough forms the largest palace in Berlin. Construction began in 1695 as a summer residence for Sophie Charlotte, wife of Elector Friedrich III of Brandenburg who became King Friedrich I in Prussia in 1701. The original baroque building by Johann Arnold Nering expanded with additions through the 18th century. The palace gardens extend 55 hectares behind the main building, designed in formal French style by Siméon Godeau in 1697 and later modified to English landscape style. The New Wing (Neuer Flügel) added 1740-1743 contains the Golden Gallery, a 42-meter-long rococo ballroom with gilded decorations by Johann August Nahl. Allied bombing damaged the palace in 1943; reconstruction occurred from 1945 through 1973. The palace rooms display period furnishings and the royal porcelain collection. Separate ticket prices apply to the Old Palace and New Wing, with a combined ticket costing €17 as of 2024.
The Tiergarten park covers 210 hectares in central Berlin, forming the city's largest public park. The area served as a hunting ground for Brandenburg electors from the 16th century until the 18th century when Friedrich II ordered its conversion to a public park in 1742. Landscape architect Peter Joseph Lenné redesigned the grounds between 1833 and 1840 in the English garden style with winding paths and irregular tree plantings. The Victory Column (Siegessäule) stands 67 meters tall in the center of the Tiergarten, commemorating Prussian military victories in the 19th century. Heinrich Strack designed the sandstone column completed in 1873, originally positioned in front of the Reichstag building. The Nazi government moved the column to its current location in 1938 and added a fourth section, increasing the height from 50 meters. A bronze statue of Victoria by Friedrich Drake weighing 35 tons tops the column. An internal staircase of 285 steps leads to a viewing platform at 51 meters elevation.
The Berlin Philharmonic (Berliner Philharmoniker) performs in the Philharmonie concert hall at the Kulturforum cultural complex. Hans Scharoun designed the asymmetrical tent-like building completed in 1963, placing the orchestra in the center surrounded by terraced seating for 2,440 audience members. The vineyard-style seating configuration influenced subsequent concert hall designs worldwide. Herbert von Karajan served as principal conductor from 1955 until 1989, conducting over 900 concerts with the orchestra. Claudio Abbado succeeded Karajan from 1989 to 2002, followed by Simon Rattle from 2002 to 2018 and Kirill Petrenko from 2019 to present. The orchestra performs approximately 120 concerts annually at the Philharmonie. Individual concert tickets range from €19 to €169 depending on seating location. The Digital Concert Hall subscription service streams live performances and archive recordings for €14.90 monthly as of 2024.
The Berlin State Opera (Staatsoper Unter den Linden) occupies the opera house on Unter den Linden boulevard in Mitte. Georg Wenzeslaus von Knobelsdorff designed the original Rococo building completed in 1742, making it the first freestanding opera house in Germany built specifically for that purpose. Fire destroyed the building in 1843; Carl Ferdinand Langhans designed the reconstruction completed in 1844. Allied bombing damaged the building in 1941; reconstruction finished in 1955 under East German administration. The most recent renovation from 2010 to 2017 by architect Bernd Ebert modernized technical systems while preserving the historic facade. The auditorium seats 1,356 people. Daniel Barenboim served as general music director from 1992 until 2023. The opera company performs works from baroque through contemporary composition during a season running September through July. Tickets begin at €15 for restricted-view seating and extend to €260 for premium orchestra seats as of 2024.