High Quality Content by WIKIPEDIA articles! Oberhausen (German pronunciation: ) is a city on the river Emscher in the Ruhr Area, Germany, located between Duisburg (c. 12 km) and Essen (c. 13 km). The city hosts the International Short Film Festival Oberhausen and its Gasometer Oberhausen is an anchor point of the European Route of Industrial Heritage. It is also well known for the Centro, which is the biggest shopping mall in Germany. The city`s Sea Life Centre was home to Paul the Octopus.