The industrial and commercial city of Duisburg on the western edge of the Ruhr, at the confluence of the river Ruhr with the Lower Rhine, can claim two superlatives to its credit: it takes first place in Germany in the production of steel; and its harbor on the river Ruhr is the largest inland port in the world.
On the Kaiserberg, to the east of Duisburg, is the Zoo, with a spacious open enclosure, a large monkey house, an aquarium, a dolphinarium and a "whalarium".
In Duisburg's Düsseldorfer Strasse, which branches off the south side of Königstrasse, is the Wilhelm Lehmbruck Museum (entrance in Friedrich-Wilhelm-Strasse), with 20th C. sculpture and painting. The collection includes numerous works by the sculptor Wilhelm Lehmbruck (1881-1919), who was born in Duisburg-Meiderich.
Address: Wilhelm Lehmbruck Museum, Friedrich-Wilhelm-Strasse 40, D-47051 Duisburg, Germany
In Königstrasse (pedestrian zone), the main street in Duisburg's city center, is König-Heinrich-Platz, with the Municipal Theater (Stadttheater) and the Mercator Hall (1962), a multi-purpose hall for concerts, congresses, sporting events, performances of various kinds and exhibitions.