The Palatinate Museum is located in a former mill, the Herzogmühle on the Herzogweiher, a reservoir on the River Isenach in the Bad Dürkheim ward of Grethen.

In 2008 there was an expansion: after the renovation of the former mill restaurant and the erection of an extension to the building the new entrance area and rooms for special exhibitions were officially opened on 8 November 2008.

With a floor area of 400 square metres, the museum offers an insight into the Rotliegendes period about 290 million years ago.

At that time the southern and northern continental plates collided in this region, producing the Variscan mountains, and a moist-warm tropical climate prevailed.

Another major subject in the exhibition area is mining in the North Palatine Uplands with special coverage of the living and working conditions of the miners.