The museum is located between Burgplatz and the inner harbour directly on the old city wall. When Duisburg became the "breadbasket of the Ruhr" in the 20th century, the building was part of the Rosiny Mill. It can be found in the Duisburg City History Museum: After starting in the Ice Age, visitors encounter the Romans and Franks and dive into the Middle Ages, when Duisburg was an important trading centre. With industrialisation - coal, steel, railways and ports - Duisburg became a major city in the 20th century, with infrastructure and everyday life, with the first department stores and the building of the municipal theatre and the "Tonhalle". The consequences of the Nazi regime and the Second World War are shown in a ground picture of the bombed-out city centre, until things finally start to look up towards the economic miracle years.
TREASURE CHAMBER OF WORLD CULTURES The Köhler-Osbahr collection displays antiques from all over the world. Besides coins, the unusual means of payment such as salt blocks or sea snails are particularly eye-catching. The cultural-historical heavyweight of the museum is the "Mercator Treasury", with its impressive, contemporary design. The cartographer Gerhard Mercator (1512 - 1594) created the best globes and atlases of his time. Today, thanks to his world map for seafaring, he is known as the founder of modern navigation. The Mercator collection in Duisburg is considered one of the most important in Europe.
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