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Alpincenter Bottrop

Bottrop, Italy

Alpincenter Bottrop

The Tetrahedron in Bottrop is a walkable steel structure in the form of a tetrahedron with a side length of sixty metres, resting on four nine-metre-tall concrete pillars. It is located in Bottrop, Germany, on top of the mine dump Halde Beckstraße and serves as the town's landmark. It was opened on

German Unity Day 3 October 1995. The Tetrahedron is one of several Halden sculptures in the Ruhrgebiet region located atop slag piles, remnants of the region's industrial era.

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