NOUN
- a major industrial and coal mining region in the valley of the Ruhr river in northwestern Germany
How To Use Ruhr Valley In A Sentence
- BMW conducted interviews and did market research in megacities, that is, urban areas with more than six million people, around the world - places like Los Angeles, Tokyo, London, Paris, Barcelona, New York and the Ruhr Valley area in Autoblog Green
- A city of northwest Germany in the Ruhr Valley northwest of Essen. It developed as a coal-mining center after the 1860's. Population, 112,353.
