To be privately owned
Karlstein Castle

In the Karlstein district of the market town of Regenstauf in Bavaria, Karlstein Castle rises, a neo-Gothic structure. It is known for its four-winged complex and the integrated St. Ulrich Castle Chapel.
History+
The origins of Karlstein Castle date back to 1393, when the Lords of Leuchtenberg initiated its construction. The castle saw several changes of ownership. A significant event was its plundering in 1632 by the Swedish General Craz during the Thirty Years' War. Since 1808, the estate has been owned by the Counts of Drechsel-Deufstetten. After 1900, extensive renovations and an expansion took place, giving the castle its current neo-Gothic appearance. A personality who grew up here was Max Ulrich Graf von Drechsel, a resistance fighter against the Nazi regime.
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: 49.1517, 12.1748