To be privately owned and can be visit.
Oberdiessbach Castle

Oberdiessbach Castle, a country estate in the Canton of Bern, is considered a significant example of French Renaissance architecture in Switzerland. Built in the 17th century, the castle is distinguished by its design and architectural character.
History+
The construction of Oberdiessbach Castle took place between 1666 and 1668. It was built as a country residence for Albrecht von Wattenwyl, a colonel in French service under King Louis XIV. The castle was designed in the late French Renaissance style and remains to this day in the possession of the von Wattenwyl family.
Source: Wikipedia · Licence: CC BY-SA 4.0
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: 46.8390, 7.6261