Plzen or Pilsen is a city in western Bohemia in the Czech Republic. It is the capital of the Plzen Region and the fourth most populous city in the Czech Republic. It is located about 90 km west of Prague at the confluence of four rivers—the Radbuza, the Mže, the Uhlava, and the Uslava—which form the Berounka River.
The city is known worldwide for Pilsner beer. Plzeň was in September 2010 selected by an official jury to be put forward to join the Belgian city of Mons as the European capital of culture in 2015