Example image of eyePlorer eyePlorer map for 'Duisburg': Germany North Rhine-Westphalia Ruhr Düsseldorf (region) Düsseldorf International Airport 2007 December 31 Steel Coal mining Blast furnace Pig iron König Brauerei University of Duisburg-Essen Bergisches Land Rhine Ruhr (river) City Dinslaken Düsseldorf Moers Mülheim Oberhausen Ratingen Rheinberg Homberg Ruhrort 5th century Ford (crossing) Hellweg Trade route Franks Normans Count palatine Free imperial city Royal charter Hanseatic League Gerardus Mercator Archbishop Cologne Defensive wall Lothair III, Holy Roman Emperor Brandenburg-Prussia Duchy of Cleves Krupp Rhine Province ThyssenKrupp Essen Sulfuric acid Dortmund Independent city
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