Four medieval defence works at the Hausberg near Jena

 Beside the historical inn, the Fox Tower dominates on the Hausberg as a landmark. It is the widely most observable residue of a close group of castles in the high and late Middle Age. The historical tradition mentions three names: Kirchberg, Greifenberg, Wintberg. The Kirchberg is first of all referred to already in a chronicle of 937, as well as after that in the 2nd half of 10th and beginning 11th century. The associated castle area is also mentioned in the 11th century. Royal burgraves governed at the Hausberg since the middle of 12th century. Nearly in the same period (1156) the nobles of Greifenberg were documentary for about 100 years. Rather late (1279) the Wintberg castle was vouched.

Latest investigation in the 1990s proved the existence of four medieval castles, and assigned the Fox Tower as part of the “later Kirchberg” close to the former royal castle.

The documented history of the Hausberg castles exemplifies for a strategically  important place the typical conflicts between the imperial, regional and local rulers, which climaxed to the destruction of three castles by means of strong siege equipment in 1304.