To be privately owned
Katzenberg Castle

Katzenberg Castle in Upper Austria rises on a hill in the municipality of Atzbach. Originally used as a hunting lodge, it has a history with numerous changes of ownership through marriage and inheritance.
History+
The construction of Katzenberg Castle is presumed to have taken place around 1600. According to a 1673 urbarium, it was associated with Köppach Castle. The Jörger family used the property as a hunting lodge. After the death of Helmhard IX. Jörger, the property passed to Franz Albrecht Graf Harrach as a dowry through his daughter Anna Magdalena. Shortly thereafter, the dominion was sold to David Ungnad von Weißenwolff, the brother-in-law. In 1722, Katzenberg again passed as a dowry, this time through Maria Josef von Weißenwolff, to Johann Wilhelm Fürst Trautson. In 1744, the property changed hands as a bridal gift from Maria von Trautson to Karl Anton Fürst Auersperg.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://commons.wikimedia.org/wiki/File:Atzbach_%28Schloss_Katzenberg-1%29.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: 48.0766, 13.6946