The Castle can be visited
Braunshardt Castle

The Rococo Braunshardt Castle stands in the South Hessian town of Weiterstadt-Braunshardt. It is characterized by its French-inspired architecture and features a design where each room is decorated in a different color – a characteristic that once impressed even British Queen Victoria.
History+
The origins of the castle date back to 1760, when Landgrave Ludwig VIII of Hesse-Darmstadt gifted the Braunshardt estate to his son, Prince Georg Wilhelm. He commissioned architect Johann Jakob Hill to build the castle, with financial support from his wife, Countess Maria Luise Albertine zu Leiningen-Dagsburg-Falkenburg.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://www.wehrbauten.de/thread.php?threadid=971
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Location: 49.9150, 8.5674