The Castle can be visited
Haynsburg Castle

In Wetterzeube-Haynsburg, located in the Burgenlandkreis district of Saxony-Anhalt, stands Haynsburg Castle, a fortress at approximately 230 meters above sea level.
History+
The first documented mention of Haynsburg Castle dates back to 1185, when a nobleman named Conradus de Hagensberg was named. By 1238, it was already described as a fortified place. After being sold to Friedrich von Meissen in 1295, the castle came into the possession of the Bishopric of Naumburg-Zeitz in 1305 and was considered its strongest fortress. Its strategic importance lay in protecting the imperial hunting lodge in Kayna and controlling important trade routes and Elster river crossings.
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: 51.0187, 12.0689