Berlin
Berlin is the capital and largest city of Germany by both area and population.Its more than 3.85 million inhabitants make it the European Union's most populous city, according to population within city limits.One of Germany's sixteen constituent states, Berlin is surrounded by the State of Brandenburg and contiguous with Potsdam, Brandenburg's capital. Berlin's urban area, which has a population of around 4.5 million, is the most populous urban area in Germany. The Berlin-Brandenburg capital region has around 6.2 million inhabitants and is Germany's second-largest metropolitan region after the Rhine-Ruhr region
Berlin straddles the banks of the Spree, which flows into the Havel (a tributary of the Elbe) in the western borough of Spandau. Among the city's main topographical features are the many lakes in the western and southeastern boroughs formed by the Spree, Havel and Dahme, the largest of which is Lake Müggelsee. About one-third of the city's area is composed of forests, parks, gardens, rivers, canals, and lakes. The city lies in the Central German dialect area, the Berlin dialect being spoken.