Siegstrecke
The firm was founded on 3 February 1869 as the Bröl Valley Railway Company ("Brölthaler Eisenbahn-Actien-Gesellschaft") or BTE. On 10 June 1921 it was renamed as the Rhine-Sieg Railway ("Rhein-Sieg-Eisenbahn-AG") or RSE. The company headquarters was moved in 1917 from Hennef (Sieg) to Beuel. In 1983 the RSE went into the Rhein-Sieg-Verkehrsgesellschaft. It should not be confused with the Rhein-Sieg-Eisenbahn GmbH founded in 1994 by the Verkehrsclub Deutschland.