sentences:  The terminus of this line, the "Rheinische Bahnhof" (Rhenish station), named after its operator, the Rhenish Railway Company ("Rheinische Eisenbahn-Gesellschaft"), was next to the station of the Sieg Railway of the Cologne-Minden Railway Company ("Cöln-Mindener Eisenbahn-Gesellschaft") on a site later used as a freight depot.In the same year, the Siegburg–Olpe railway (or Agger Valley Railway) via Overath and Dieringhausen to Olpe was opened.With the opening of the direct Köln-Kalk–Overath railway in 1910, the Siegburg–Olpe line lost its importance and it has no longer been used for passenger services since 1954.