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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Gasometer in Oberhausen

Gasometer in Oberhausen, Germany

The Gasometer in Oberhausen is the largest disc-type gasholder in Europe. Today, it serves as an exhibition hall. Visitors enjoy an excellent view after reaching the top by an elevator or a staircase outside the building.

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Jahrhunderthalle in Bochum

Jahrhunderthalle in Bochum, Germany

The Jahrhunderthalle is a venue for such famous events like the Ruhrtriennale. Interesting detail: The hall was constructed on top of an existing plant. After that, the soil was risen up to the level of the hall. So the first plant became part of the basement.

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