sentences:  In 1897, a narrow gauge line was built by the Brölthaler Eisenbahn-Actien-Gesellschaft (Bröl Valley Railway Company) to its own station south of Siegburg station; this was closed in 1955.In 1911, the Siegburg Railway ("Siegburger Bahn") was opened, which is now operated as part of the Bonn Stadtbahn.In 1914, the Siegburg–Zündorf Light Railway ("Kleinbahn Siegburg–Zündorf") was opened, but the Siegburg–Troisdorf section of it was closed in 1963.