Essen is a big city in the center of the Ruhr. The district town is part of the administrative district of Düsseldorf in North Rhine-Westphalia. The city is one of the main centers of the country. With 580.000 inhabitants Eating is one of the largest German cities. Even today, food is an important industrial center and the seat of important enterprises. Since 1958, food is the Roman Catholic bishop and a university town since 1972.