The remains of the Castle can be visited
Tannenfels Castle

The Tannenfels castle ruin, a former hilltop castle, stands at approximately 472 meters above sea level above Dannenfels.
History+
Tannenfels Castle was first documented in 1330 when Count Philipp and his wife Lisa von Katzenelnbogen endowed a chapel on the castle grounds. Originally part of the Kirchheim dominion, it belonged to the Lords of Bolanden. By the end of the 13th century, the majority of the complex passed to the Counts of Sponheim through inheritance. In 1364, Bechtholf von Beckingen was appointed as a castellan. For a time, Tannenfels Castle served as the seat of the Bolanden-Dannenfels branch of the Sponheims.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://www.wehrbauten.de/thread.php?threadid=1343
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: 49.6289, 7.9382