Horner Rennbahn is a metro station on the Hamburg U-Bahn lines U2 and U4. The underground station was opened in January 1967 and is located in the Hamburg district of Horn, Germany. Horn is part of the borough of Hamburg-Mitte. From Wikipedia
Replacement buses extend U3 travel times by up to 20 minutes, while U2 now offers uninterrupted service after two years of construction.