The remains of the castle can be visited
Günzelburg Castle

The Günzelburg ruin, also called Greifenburg, Gryffenburg and Denzelburg, is the ruin of a rock castle on a 685 m above sea level high rock tower above the village of Weiler bei Seißen, a district of the city of Blaubeuren, in the Alb-Donau district in Baden-Württemberg.
History+
The castle was built in the late 13th century by the Grif von Berkach, presumably as a successor to a castle on the nearby Wachtfels. The Lords of Berkach were ministerials of the Counts of Berg. As subsequent owners, the Lords of Weiler and the Lords of Westernach are mentioned at the end of the 14th century, Ulrich von Westerstetten in 1460 and Blaubeuren Monastery after 1460.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: Eugen Lehle · Wikimedia Commons · CC BY-SA 3.0
This description is a machine translation of an excerpt from the linked Wikipedia article. The source text was written by its authors, the translation is by Mobile History; like the original it is licensed under CC BY-SA 4.0.
Location: 48.4080, 9.7683