Mülheim (Ruhr) West station Mülheim (Ruhr) West station Mülheim (Ruhr) West station is located in the German city of Mülheim in the German state of North Rhine-Westphalia. It is on the Witten/Dortmund–Oberhausen/Duisburg line and is classified by Deutsche Bahn as a category 5 station. The station was opened 1 March 1862 by the Bergisch-Märkische Railway Company and was called "Mülheim (BM)" station until 1892, when it was renamed "Mülheim (Ruhr)". Although it was larger than the station now known as Mülheim (Ruhr) Hauptbahnhof, it was not accepted as the town's main station, because it was too far from its central area. On 26 May
Ruhr breaks between the individual city boroughs. Thus the Ruhr is described as a polycentric urban area, which shares a similar history of urban and economic development. Because of its history, the Ruhr is structured differently from monocentric urban regions such as Berlin and London, which developed through the rapid merger of smaller towns and villages with a growing central city. Instead, the individual city boroughs and urban districts of the Ruhr grew independently of one another during the Industrial Revolution. The population density of the central Ruhr is about 2,100 inhabitants per square kilometre (about 5,400 per square mile)—low compared