The Rhine-Ruhr metropolitan region (German: Metropolregion Rhein-Ruhr) is the largest metropolitan region in Germany, with over ten million inhabitants
from west to east: Duisburg, Oberhausen, Bottrop, Mülheim an der Ruhr, Essen, Gelsenkirchen, Bochum, Herne, Hagen, Dortmund, Hamm and the districts of Wesel
Flixtrain, Deutsche Bahn Intercity-Express and Intercity services. In local passenger service, Dortmund is served by several regional and S-Bahn lines (as of
of the eastern Ruhr. Dortmund is the second-largest city in the Low German dialect area, after Hamburg. Founded around 882, Dortmund became an Imperial