The city lies at the foot of the first mountain range of the Jura Mountains area, guarding the only practical connection to Jura in the area, on the northeastern shores of Lake Biel (Bielersee, Lac de Bienne), sharing the eastern tip of the lake with its sister city, Nidau, the administrative centre of the District of Nidau. Neuchâtel, Solothurn, and Berne (the capital of Switzerland) lie west, east and southeast of Biel/Bienne. They all can be reached in about 30 minutes, either by train or by car.