The Ruhr, by German-speaking geographers and historians more accurately called the Ruhr district, Ruhr region or Ruhr valley (German Ruhrgebiet, colloquial Ruhrpott, Kohlenpott, Pott or Revier), is an urban area in North Rhine-Westphalia, Germany.

With a population density of 2,800/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 the Bergisches Land. It is considered part of the larger Rhine-Ruhr metropolitan region of more than 12 million people.

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 of 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 (including Düsseldorf and Wuppertal).

It is the fifth largest urban area in Europe after Istanbul, Moscow, London and Paris.

For 2010, the Ruhr region was one of the European Capitals of Culture.

Read more about Ruhr:  Geography, Demographics, Culture

Other articles related to "ruhr":

Ruhr - Transport - Air Transport
... and is within 20 km of most of the Western Ruhr area ... Dortmund Airport in the Eastern Ruhr is a mid-sized airport, offering scheduled flights to domestic and European destinations ...
Battle Of The Ruhr
... The Battle of the Ruhr was a 5-month long campaign of strategic bombing during the Second World War against the Nazi Germany Ruhr Area, which had coke plants, steelworks, and 10 synthetic oil plants ... The latter was safely evacuated during the Battle of the Ruhr.Although not strictly part of the Ruhr area, the battle of the Ruhr included other cities such as Cologne which were within ... Although the Ruhr had always been a target for the RAF from the start of the war, the organized defences and the large amount of industrial pollutants produced that ...
Con Ruhr
... ConRuhr (Consortium of the Ruhr-Universities) is the German academic liaison office that was established in 2004 by the Ruhr-University Bochum, the Dortmund University of Technology ... The three universities are located very close to each other in Germany’s Ruhr area and characterized by a strong collaboration and joint initiatives ... US, CIS, Brasil and Germany, as well as promoting the Ruhr area as a center of academic excellence ...
Biggesee - Purpose
... The lake serves to regulate the Ruhr and Lenne as well as providing water for the Ruhrgebiet ... Ruhrgebiet so as to maintain the same level of water in the Ruhr ... by all the reservoirs in the river system of the Ruhr combined ...
Bergisch-Märkische Railway Company - History - Trunk Routes
... the company built other main and branch lines in the Ruhr along the Hellweg an ancient highway and the Ruhr and Rhine rivers ... between Dortmund and Witten through Bochum-Langendreer, Essen, Mülheim an der Ruhr to Duisburg ... The development of the Ruhr valley was largely a result of the opening of the BME’s trunk line ...