To be privately owned
CastleTrofaiach-Treffning
Schlossbauer (Zmöll) Castle

Schloss Schlossbauer (Zmöll)+
Schloss Schlossbauer (Zmöll) was first mentioned in 1220. From the 12th to the 15th century, the owners were the Lords of Zmölln.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://commons.wikimedia.org/wiki/File:Schlo%C3%9Fbauer.jpg
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: 47.4318, 15.0196