To be privately owned
Heck Manor

Haus Heck in Essen-Werden is a historic manor and estate house. It is one of the early architectural monuments of the former Rhine Province.
History+
The first documented mention of the property as “dat hys an der Hecghe” dates back to 1390, although a knight Heinrich von Hecga is already mentioned in 1259. In 1412, it was again mentioned in a feudal register of Werden Abbey. The name “Hys an der Hecghe” suggests the building's function as part of Werden's fortification system, surrounded by a hedge-planted rampart. Haus Heck was probably destroyed in a city fire in 1498, as it was described as a ruin in 1572 and depicted as “Ruine Castri Hegge” in an illustration from 1581. This illustration shows a two-part complex with a core castle and an outer bailey. Reconstruction may have begun around 1599 by Dietrich von der Hoven and Margarethe von Oefte, evidenced by a fireplace bearing this date.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://www.wehrbauten.de/thread.php?threadid=575
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: 51.3911, 7.0015