Porz-Wahn station
Porz-Wahn is a railway station situated at Porz, Cologne in the German state of North Rhine-Westphalia on the Sieg and East Rhine Railways. It is served by line S12 of the Cologne S-Bahn. This operates between, or and or at 20-minute intervals. It is also served by the S19 service between Düren and Hennef or Au, at 20-minute intervals. These two services provide a service every 10 minutes between Troisdorf and Cologne. It is classified by Deutsche Bahn as a category 4 station.