The remains of the Castle can be visited
Scharfenberg Castle

The castle ruin Scharfenberg, popularly also known as "Münz", is situated in the Palatinate Forest above Annweiler. This medieval rock castle is part of the Trifels group.
History+
The construction of Scharfenberg Castle took place in the first half of the 12th century under the rule of the Staufer king Konrad III. It initially served as a state prison. In the early 13th century, it became the ancestral seat of the ministerial family of Scharfenberg, whose most prominent representative was Konrad III. von Scharfenberg, Bishop of Speyer and Chancellor of the Empire. Its current state as a ruin results from its destruction during the Peasants' War in 1525.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://www.wehrbauten.de/thread.php?threadid=1456
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 49.1890, 7.9868