This museum tells one of the most exciting evolutionary stories. The Earth had already existed for thousands of millions of years before a green revolution created the basis for life as we know it about 400,000 years ago.

Nideggen Castle looks back on an eventful history and is a unique cultural monument to the history of the Middle Ages in the Rhineland and the Eifel.

A natural monument of extraordinary fascination: a narrow gorge with metre-high rock faces, cool and dark. Cracks and crevices, weathered and overgrown with mosses and lichens. Anyone walking through this eye of a needle in the sandstone is walking through a 200-million-year-old seabed that harbours many secrets.

The Gemünden maar is lined up along a fissure running SE to NW. About 20,000 to 30,000 years ago they erupted and Gemünden Maar lake was formed.

In the community forest of Herforst, the so-called "Arenberg Forest", there are still remains of this wall as a 1 m-high stone wall with original foundations.