The largest cities in the Rhine-Ruhr area are Cologne, with over one million inhabitants, followed by Düsseldorf, Dortmund and Essen, each of which has slightly more than 580,000.
Many unoffi… See more

Historically, most of the Ruhr area was for the most part characterized by heavy industry since the age of industrialisation in the late 19th and early 20th century. Since the Middle Ages, Cologne, Dortmund, and other cities … See more

The area has four international commercial airports, and several smaller aerodromes for general aviation.
The network of Autobahns in North Rhine-Westphalia is the most dense in all of Germany. … See more

The region is host to numerous large events, comprising fun fairs and cultural events like the Cologne and Düsseldorf carnivals (carnival is however a public event in almost all cities and towns of the area), the … See more

The Rhine-Ruhr metropolitan region is home to nine universities and over 30 partly postgraduate colleges, with a total of over 300.000 students. The largest and oldest university is the University of Cologne (Universitä… See more