To be privately owned
Merlsheim Castle

Merlsheim Castle, a moated castle, is an example of the transformation of a medieval fortification into a castle.
History+
The first documented mention of Merlsheim dates back to 1292, when it was known as Merlhossen and Merlhusen. During this period, the location served as the ancestral seat of a knightly family of the same name, which flourished from the 13th to the 15th century. In the mid-14th century, the Knights of Oeynhausen acquired land in Merlsheim, and in 1390, Johann der Junge von Oeynhausen purchased the entire village. The current form as a moated castle was given to the complex between 1667 and 1668 under the direction of Canon C.Ph. von Ketteler, who had the old fortification redesigned.
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: 51.7966, 9.0224