To be privately owned
Quadenhof Castle

Quadenhof Castle in Düsseldorf-Gerresheim is an example of late medieval brick architecture and is among the few preserved secular buildings of its kind in the Düsseldorf region. Originally conceived as a fortified noble residence.
History+
The construction of Quadenhof took place between 1427 and 1436, commissioned by Godert von Broichhusen. The estate later received its name from the Quad von Raede family, who acquired it through marriage in 1458. The building was constructed in the Late Gothic style as a three-story, rectangular brick structure with a steep gabled roof.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://www.wehrbauten.de/thread.php?threadid=572&sid=fabdb0784445e173f7d2c746486aca16
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: 51.2368, 6.8639