U15 (Berlin U-Bahn)

The U15 was a line on the Berlin U-Bahn. Originally the U3 running between Wittenbergplatz and Uhlandstraße, it became a branch of the U1 in 1993 as part of the reorganisation of the network following the reopening of the U2.

On December 12, 2004, it was renumbered as the U1.