North Rhine-Westphalia - 23 Attractions You Must Visit

The Tetrahedron in Bottrop city is a steel structure with a side length of 60m, resting on four concrete pillars. Opened on October 3, 1995, it is located on top of the mine dump Halde Beckstraße and serves as the town's landmark.

This large former industrial site in the city of Essen is a UNESCO world heritage site since 2001 and one of the important places in the European Route in Industrial Heritage. It was Founded in 1847, and is ranked as the largest of its kind in Europe. Built in the New Objectivity style, it is considered an architectural and technical masterpiece, earning it a reputation as the "most beautiful coal mine in the world".

Founded in April 1949 as Ruhr-Zoo, it is one of the most modern zoological gardens in Germany. It is known for its panoramas and cultural approach. The main attractions are big animals, mostly mammals; The zoo has no aquarium, insectarium, or other smaller animal facilities.