quality:correction, quality:corruption, structural:summarization
Urbanisation

More than two thirds (68.2%) of EU inhabitants lived in urban areas in 2020, which is slightly less than the world average. Cities are largely spread out across the EU with a large grouping in and around the Benelux. The EU contains about 40 urban areas with populations of over 1 million. With a population of over 13 million, Paris is the largest metropolitan area and the only megacity in the EU. Paris is followed by Madrid, Barcelona, Berlin, the Ruhr, Milan, and Rome, all with a metropolitan population of over 4 million.

The EU also has numerous polycentric urbanised regions like Rhine-Ruhr (Cologne, Dortmund, Düsseldorf et al.), Randstad (Amsterdam, Rotterdam, The Hague, Utrecht et al.), Frankfurt Rhine-Main (Frankfurt, Wiesbaden, Mainz et al.), the Flemish Diamond (Antwerp, Brussels, Leuven, Ghent et al.) and Upper Silesian-Moravian area (Katowice, Ostrava et al.).