The structure weighs approximately 210 tonnes and is anchored to the heap by four concrete foundations.
The staircase leading to the top is deliberately designed to oscillate, creating a swaying sensation for visitors.
The sculpture is accessible 24 hours a day due to its status as a public monument on a former industrial site.
The base of the heap, known as Halde Beckstraße, stands roughly 80 metres above the natural landscape level.
It is a central landmark of the 'Route of Industrial Heritage' in the Ruhr region.
The Tetraeder is a 60-metre tall, walk-in steel sculpture designed by Wolfgang Christ located on the Halde Beckstraße in Bottrop. Built as part of the International Building Exhibition Emscher Park, the structure sits atop a man-made spoil heap composed of former mining debris. The tetrahedron is supported by four pillars and features a complex system of stairs and platforms that lead visitors to three observation decks. The highest platform reaches an elevation of approximately 90 metres above the surrounding terrain. The steel framework is illuminated by LED lighting at night, making it a prominent feature of the Ruhr area skyline. Its design intentionally mirrors the geometry of a tetrahedron, providing panoramic views of the Rhine-Ruhr industrial landscape.
The highest observation deck for 360-degree views, or the base of the heap for the perspective of the structure's scale against the sky.
Wear sturdy footwear as the walk up the spoil heap involves a significant incline on gravel paths.
Bring a windbreaker, as wind speeds at the top of the sculpture are significantly higher than at the base.
Use binoculars to identify distant landmarks across the dense Ruhr industrial network.
Do not attempt to climb the exterior steel frame; use only the designated internal staircases.
