Roman sewer in Cologne

Roman sewer tunnel in Cologne, Germany

Below the Spanische Bau in Cologne, fans of Roman architecture find the remains of the ancient Roman Praetorium. Right next to these ruins, visitors have the chance to walk through a former Roman sewer below the streets of the modern city.

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Torpedo car in Duisburg

A torpedo car in Landschaftspark Duisburg-Nord, Germay

On my night stroll through the Landschaftspark Duisburg-Nord, an industrial heritage park in Ruhr area,  I came across this torpedo car. These cars are used for hauling molten pig iron from the blast furnace to the next processing unit.

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