To be privately owned
Leyenburg Castle

In Rheurdt on the border with Neukirchen-Vluyn in the Kleve district, North Rhine-Westphalia, Schloss Leyenburg, a historic manor, is located. Originally known as "Haus Kieckhorst," it transformed from a medieval fortified complex to a Rococo hunting lodge.
History+
The estate's origins date back to 1349, when "Haus Kieckhorst" was first mentioned as a Guelders fief. This early complex was surrounded by moats and earthworks and featured a defensive tower. In 1431, it was plundered and set on fire by the robber knight Hermann von Eppinghofen. Further severe damage occurred in 1642 by Hessian-Weimar troops. The Kieckhorst family owned the estate until the 16th century, followed by the von Afferden family until 1768, and briefly by the Freneau family. In 1772, the Krefeld silk manufacturing family von der Leyen acquired the estate as a country residence. They largely demolished the old buildings and erected a Rococo hunting lodge, which was named Leyenburg. In 1832, the castle was raised by one floor and was redesigned in the Neoclassical style in the 19th century.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://www.wehrbauten.de/thread.php?threadid=566&hilight=Borghees
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: 51.4360, 6.5193