To be privately owned
Nehmten Manor

Herrenhaus Nehmten, a stately manor house, rises directly on the shore of the Großer Plöner See in Schleswig-Holstein. It impresses not only with its historic architecture but also with a special visual axis that extends through the park to Plön Castle.
History+
The origins of the current Herrenhaus Nehmten date back to the early 18th century when the building was constructed around 1712. In the mid-19th century, specifically around 1850, the estate underwent a significant expansion. Today, the manor house, along with its extensive estate park and characteristic avenues, is a protected cultural monument.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://de.wikipedia.org/wiki/Datei:Schloss_Nehmten.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: 54.0965, 10.3938