The Ruhr Area, (German Ruhrgebiet, colloquial Ruhrpott, Kohlenpott or Revier) is an urban area in North Rhine-Westphalia, Germany. With 4435 km² and a population of some 5.3 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 on the Bergisches Land. It is considered part of the larger Rhine-Ruhr metropolitan area of more than 12 million people. .
