The former depot Thielenbruch for the tram network consisted of one hall from 1906 and another from 1926.

The older hall was rebuilt to the terminal of the Stadtbahn lines.

[2] Since 1997, the hall from 1926 is used as a transport museum to document the development of tramways and Stadtbahn in the Cologne region.

[3] Its collection contains several tram cars that were used by the Cologne transport authority (Kölner Verkehrsbetriebe, KVB), among them a horse-drawn tram, an "Achtachser" (lit.

eight-axler), an articulated tram with eight axles, which was the last classical tram of Cologne, yet a very common type as it was used almost throughout the entire network, as well as the prototype of the Stadtbahn car B.