Berliner U-Bahn-Linien: U4

The last volume in our series on the Berlin U-Bahn lines tells the story of today's U4, which runs from Nollendorfplatz to Innsbrucker Platz. Berlin's shortest subway line was opened in 1910 by the then independent city of Schöneberg and has not been expanded since. Nevertheless, there is a lot of interesting stuff to tell about this line. Numerous colour and black and white photographs illustrate the exciting story and each subway station is described in detail.