The remains of the Castle can be visited
Rodenstein Castle

The Rodenstein Castle Ruin, a hillside castle in the Odenwald, is located in the municipality of Fränkisch-Crumbach in Hesse at approximately 332 meters above sea level.
History+
Rodenstein Castle was built around 1240 as a defensive fortress to counter the neighboring Reichenberg Castle. The Lords of Crumbach and Rodenstein, supported by the Counts of Katzenelnbogen, were its builders. In 1346, Erkenger von Rodenstein sold half of his share to Count Wilhelm II of Katzenelnbogen. Further shares passed to Philipp I of Katzenelnbogen in 1433, and in 1436, Hans, Lord of Rodenstein and Lißberg, was enfeoffed with half of the castle. When the Katzenelnbogen family died out in 1479, their possessions fell to the Landgraviate of Hesse. The castle was not destroyed by wartime conflicts.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: Dr. Gebhard Gaukler
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: 49.7314, 8.8131