To be privately owned
Steinernes Haus Castle (Erbach)

The Steinernes Haus Castle, also known as Tempelhaus, is a medieval knight's house in Erbach in the Odenwald. It was once an integral part of the castle's freedom of the former Erbach Castle, which is now known as Erbach Palace. Its history is linked to the knights who settled in front of the castle and formed the core of medieval Erbach.
The building, whose name "Steinernes Haus" only emerged in the 18th century and is often associated with the Knights Templar, was a seat of the Echter von Mespelbrunn family. A farmstead of this family in Erbach was first mentioned in 1398. Dendrochronological examinations dated the timbers of the roof truss to the years 1378/79.
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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: 49.6580, 8.9918