North Rhine-Westphalia is the westernmost and in terms of population and economic output the largest Federal State of Germany. The capital city is Düsseldorf. The largest city is Cologne. Other major cities are Essen, Dortmund, Duisburg, Oberhausen, Aachen, Bielefeld, Bonn, Bochum, Münster, Paderborn, Geseke and Wuppertal. The state is centred on the sprawling Rhine-Ruhr urbanised region, which contains the cities of Düsseldorf, Bonn and Cologne as well as the Ruhr Area industrial complex. The Ruhr area consists, among others, of the cities of Essen, Dortmund, Duisburg, Bochum, Gelsenkirchen and Oberhausen.