The remains of the Castle can be visited
Krebes Castle (Ruin)

The Krebes Ruin, a remnant of a twin-church complex, is located in the Vogtland district of Saxony. This historic site is situated at an elevation of approximately 534 meters above sea level.
History+
The area around Krebes was owned by the noble family von Sack in the 14th century. Archival records from the 1420s confirm a noble residence on Burgstein, inhabited by the Pucher family. In 1474, an apparition of the Virgin Mary led to the establishment of a pilgrimage and the construction of a pilgrimage chapel, now known as the western Burgstein ruin. This chapel was subordinate to the parish of Krebes and thus belonged to the Diocese of Bamberg.
Source: Wikipedia · Licence: CC BY-SA 4.0
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: 50.4176, 11.9992