Karl-Marx-Straße is a Berlin U-Bahn station located on the U7. The station was opened in 1926 as "Bergstrasse" (arch. Grenander) and renamed in 1946, and although Karl Marx was a hero of the socialist republic of East Germany the station is in former West Berlin. 1968 the station was elongated to 105m, due to this a lot of the original appearance was lost. 1993 parts of the platform fell into the rail track so that the station had to be closed for a few days.