Concepts · concept_ubahn_berlin_u4

U4 (Berlin U-Bahn) · Versions

With 2.9 km and five stations, the U4 is the shortest line of the Berlin U-Bahn; it was opened on 1 December 1910 as Germany's first municipal U-Bahn and connects Nollendorfplatz with Innsbrucker Platz in Schöneberg.