Berneck Castle of Baden-Württemberg by EuroTourData
Berneck Castle is the partially restored hill castle, built around 1100, located in the vicinity of the town Altensteig. Info based on the article Burg Berneck (Altensteig) of German Wikipedia.

Image copyright info
© Creative Commons: Berneck Burg mit Schildmauer, author BohunkaNika. License: CC BY-SA 4.0. Cropped from original.
Description of Berneck Castle
The castle includes the shield wall with belfry. The shield wall completely restored, it has a length of 26.6 meters, a height of about 38 meters, and a base thickness of 3.3 meters.
Badenweiler Castle is under the state ownership of the Staatliche Schlösser und Gärten Baden-Württemberg.