Altensteig Castle of Baden-Württemberg by EuroTourData
Altensteig Castle is the urban castle complex consisting of two castles, located in the northern part of the old town of Altensteig. The complex includes the Old Castle and the New Castle. Info based on the article Schloss Altensteig of German Wikipedia.

Image copyright info
© Creative Commons: Schloss Altensteig (1), author Stefan Karl. License: CC BY-SA 4.0. Cropped from original.
Altensteig Castle history
The old castle was built around 1287 as the residence of bailiffs and currently contains a museum. The new castle was built around 1613. The new castle contains the city service.