Duisburg is a German city in the western part of the Ruhr Area in North Rhine-Westphalia. With the world's biggest inland harbour and its proximity to Düsseldorf International Airport, Duisburg has become an important venue for commerce and steel production.
It is the fifteenth-largest city in Germany. The city is renowned for its steel industry. It also has a large brewery, the König Brauerei, which makes the König Pilsener brand. The University of Duisburg-Essen, with 33,000 students, ranks among the 10 largest German universities. (source)Thank you Mira!