To be privately owned
Mayerhofen Castle
At the exit of the Metznitztal valley in the municipality of Friesach stands Mayerhofen Castle, a cubic structure from the late 17th century. It is known for its Josephine facades and a Biedermeier garden.
History+
The origins of Mayerhofen date back to 1303, when Archbishop Friedrich transferred the Salzburgian Meierhof to the then Maria-Magdalena Monastery. In the 18th century, the estate changed hands several times, including the Counts Gaisruck and later Count Aichelburg. Bishop Salm-Reiferscheid and Peter von Mayerhofen were also owners for a time. In 1812, Karl Anton von Dresdner acquired the castle, before it passed into the possession of the Knappitsch family in 1837, who still own it today.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://commons.wikimedia.org/wiki/File:Gut_Mayerhofen.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: 46.9722, 14.3679