Berlin (/bɜːrˈlɪn/; German: [bɛʁˈliːn] ( listen)) is the capital city of Germany. It is the largest city in the European Union by population, with more than 3.7 million people. The city is in the eastern part of Germany. It is about 70 km (43.50 mi) west of Poland. Berlin has an area of 891 km2 (344.02 sq mi). The rivers Havel, Dahme and Spree run through Berlin. It has an oceanic climate.
Berlin is home to many famous buildings and monuments, like the Siegessäule, the Brandenburger Tor, the Reichstag and the boulevard Unter den Linden. On the boulevard are the Humboldt University and the State Opera of Berlin. The Governing Mayor of the city is Michael Müller (SPD).