Cologne (English pronunciation: /kəˈloʊn/; German Köln[kœln], Colognian:Kölle[ˈkœɫə]) is the largest city in the German federal State of North Rhine-Westphalia and the fourth-largest city in Germany (after Berlin, Hamburg, and Munich). It is located within the Rhine-Ruhr metropolitan region, one of the major European metropolitan regions and the largest in Germany with more than ten million inhabitants.