Tetraeder, Essen

The Tetraeder in Essen, Germany, stands as an emblematic landmark in the Ruhr district, known for its industrial heritage and transformative urban landscapes. This distinctive steel structure, built in 1995, is a geometrical marvel shaped like a three-dimensional tetrahedron, hence its name.

Perched atop a heap of spoil from coal mining – known locally as Beckstraße slagheap – the Tetraeder reaches a height of approximately 60 meters, offering visitors a unique vantage point from which to view the surrounding area. Its design is a nod to the region's mining past and its transition into a hub of culture and leisure.

Though not as towering as some of its famous counterparts, the Tetraeder is an architectural feat in its own right. It is constructed from steel pipes and nodes, and visitors can ascend via stairways that crisscross the structure, leading to multiple observation platforms. These platforms provide panoramic views of the Ruhr valley, showcasing a mix of urban development and green landscapes.

Accessible to the public and free of charge, the Tetraeder is a popular spot for both locals and tourists. It is especially captivating at night when it is illuminated, transforming it into a glowing beacon that can be seen from afar.