To be privately owned
CastleKönigsfeld-Burgberg
Burgberg Castle (Ruin)

The Burgberg Ruin, also known as the “Tower,” is a former moated castle in Königsfeld-Burgberg. Of the complex, a keep remains today, surrounded by residential buildings.
History+
The moated castle was first documented in 1116. It was built by the Lords of Burgberg and expanded in the 13th century. It served as a prison for the neighboring castles of Bärenberg and Waldau. The castle passed into the possession of the House of Württemberg before being completely destroyed during the Thirty Years' War.
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: 48.1519, 8.4444