To be privately owned
Mansfeld Castle

In the town of Mansfeld in the Mansfeld-Südharz district, Saxony-Anhalt, are the ruins of a fortress and three castles that reflect the heritage of the Counts of Mansfeld.
History+
The origins of the complex date back long before its first documented mention in 1229. The name Mansfeld was mentioned as early as 973, and archaeological finds confirm a Romanesque fortification from the second half of the 11th century. After the old comital family died out in 1229 and the castle fell into disrepair, Count Burchard III of Querfurt took up residence there in 1264 and initiated repairs. In the 14th century, the castle was expanded and successfully withstood sieges. A division of inheritance in 1501 led to the construction of three castles – Vorderort, Mittelort, and Hinterort – designed by early Renaissance artists. Between 1517 and 1549, a fortification was built, making Mansfeld Castle one of the strongest fortresses in Germany in the 16th and 17th centuries. The costs of construction and maintenance contributed to the decline of the counts, leading to the sequestration of the county in 1579.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: Roland Neubert, Halle (Saale)
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: 51.5938, 11.4579