Berlin is the capital city and one of sixteen states of Germany. With a population of 3.4 million in its city limits, Berlin is the country's largest city. It is the second most populous city and the ninth most populous urban area in the European Union. Located in northeastern Germany, it is the center of the Berlin-Brandenburg metropolitan area, comprising 5 million people from over 180 nations.
Berlin is located in eastern Germany, about 70 kilometers (44 mi) west of the border with Poland in an area with marshy terrain. Berlin's landscape was shaped by ice sheets during the last Ice Age. The city center lies along the river Spree in the Berlin-Warsaw Urstromtal (ancient river valley), formed by water flowing from melting ice sheets at the end of the last Ice Age. The Urstromtal lies between the low Barnim plateau to the north, and the Teltow plateau to the south. In Spandau, Berlin's westernmost borough, the Spree meets the river Havel, which flows from north to south through western Berlin. The course of the Havel is more like a chain of lakes, the largest being the Tegeler See and Großer Wannsee. A series of lakes also feeds into the upper Spree, which flows through the Großer Müggelsee in eastern Berlin. |