The Federal Republic of Germany is in Western Europe and is formed by a federation of 16 Bundesländer, states. Neighboring countries are the Netherlands, Denmark, Poland, Czech Republic, Austria, Switzerland, Luxembourg and Belgium. Germany has over 80 million inhabitants and is after Russia the country with the highest population in Europe. Germany is particularly known for the capital Berlin, the beer festival (October Feste) in Bavaria, the Black Forest, the Eifel and Sauerland. German motorways are known across the world: the autobahn, where mostly there is no speed limit. Large islands are Rügen, Usedom (German section 373 km2), Fehmarn, Sylt, Borkum and Norderney. The largest rivers in Germany: Rhine, Elbe, Danube, Main, Weser, Eems, Neckar, Havel, Moselle, Elde and the Oder. The largest lakes are Müritz, Chiemsee, Schwerinersee, Starnbergersee, Ammersee, Plauer See, Kummerower See, Steinhuder Lake, Grosser Plöner See, Schaalsee and Selentersee. Major cities are capital Berlin, the former capital Bonn, Cologne and Munich. Sightseeing in Berlin: the Reichstag, Potsdam, Brandenburg Gate, Berlin Wall with Checkpoint Charlie, Berlin Zoo or Zoologischer Garten, the Loveparade (grown into an event with more than 1 million dance music lovers). Berlin is well known to best visited by the U-bahn, the underground or subway.