Berlin Westkreuz (literally "Berlin West Cross") is a station in the Charlottenburg district of Berlin. It is served by the S-Bahn lines S3, S41, S42, S46, S5, S7 and S9 and so represents a major interchange point on the Berlin S-Bahn network. It lies at the opposite end of the Stadtbahn to Ostkreuz and is one of the four main stations on the Ringbahn (circle line). S-Bahn lines run from Westkreuz station in five directions: via the Berlin–Blankenheim railway to Wannsee and Potsdam, via the Spandau Suburban Line to Olympiastadion and Spandau, via the Ringbahn to Westend or Halensee and via the Stadtbahn to the city centre. Operationally, the station is made up of two independent operating points. The lower part is run as Berlin Westkreuz (Stadtbahn) station, abbreviated as BWKS, while the upper is run as Berlin Westkreuz (Ringbahn) station, abbreviated as BWKRR. From Wikipedia
