- published: 26 Mar 2015
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The Rhine-Ruhr metropolitan region (German: Metropolregion Rhein-Ruhr) is the largest metropolitan region in Germany with over 11 million inhabitants. It is of polycentric nature and the only megacity in Germany. It covers an area of 7,110 square kilometers and lies entirely within the federal state of North Rhine-Westphalia. The Rhine-Ruhr metropolitan region spreads from Dortmund-Bochum-Essen-Duisburg (Ruhr Area) in the north, to the urban areas of the cities of Mönchengladbach, Düsseldorf (the state capital), Wuppertal, Cologne (the region's largest and Germany's fourth largest city), and Bonn in the south. The location of the Rhine-Ruhr at the heart of the European "blue banana" makes it well connected to other major European cities and metropolitan areas like Amsterdam and the Randstad, the Flemish Diamond and Frankfurt/Rhine-Main Region.
The metropolitan area is named after the Rhine and Ruhr rivers, which are the regions's defining geographical features and historically its economic backbone.
The Ruhr (German Ruhrgebiet, colloquial Ruhrpott, Kohlenpott, Pott or Revier), is an urban area in North Rhine-Westphalia, Germany. With a population density of 7100/km² and a population of some 7.3 million, it is the largest urban agglomeration in Germany. It consists of several large, formerly industrial cities bordered by the rivers Ruhr to the south, Rhine to the west, and Lippe to the north. In the Southwest it borders to the Bergisches Land. It is considered part of the larger Rhine-Ruhr metropolitan region of more than 12 million people.
Since the Ruhr is polycentric, coordinates shown are general in nature and so can be used to focus on the entire region of the Ruhr: 51°30′N 7°30′E / 51.5°N 7.5°E / 51.5; 7.5.
From west to east, the region includes the cities of Duisburg, Oberhausen, Bottrop, Mülheim an der Ruhr, Essen, Gelsenkirchen, Bochum, Herne, Hagen, Dortmund, and Hamm, as well as parts of the more "rural" districts Wesel, Recklinghausen, Unna and Ennepe-Ruhr-Kreis. Historically, the western Ruhr towns, such as Duisburg and Essen, belonged to the historic region of the Rhineland, whereas the eastern part of the Ruhr, including Gelsenkirchen, Bochum, Dortmund and Hamm, were part of the region of Westphalia. Since the 19th century, these districts have grown together into a large complex with a vast industrial landscape, inhabited by some 7.3 million people (when including Düsseldorf and Wuppertal). It is the fifth largest urban area in Europe after Istanbul, Moscow, London and Paris.