The remains of the Castle can be visited
Kyrburg Castle

The Kyrburg castle ruin, a landmark of Kirn, is above the town between the Nahe Valley and the Hahnenbach Valley. This former hilltop castle in Rhineland-Palatinate today offers a backdrop.
History+
The Kyrburg was first documented in 1128 when Count “Emich de Kirberc” mentioned it in a document. It served as one of the ancestral castles of the Wildgraves, who were considered successors to the Emichones. In the 13th century, various lines of the Wildgraves emerged, one of which derived its name from the Kyrburg. Through marriage, the castle came into the possession of the Rheingraves in 1409. During the Thirty Years' War, it was successively occupied by Spanish, Swedish, and imperial troops before being taken by the French in 1681. Eight years later, the fortifications were modernized. In 1734, during the War of the Polish Succession and again under French occupation, the fortress was blown up.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://www.wehrbauten.de/thread.php?threadid=1340
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: 49.7864, 7.4525