The remains of the Castle can be visited
Scharfenberg Castle

Scharfenberg Castle stands on a hilltop above the town of Donzdorf in the Göppingen district of Baden-Württemberg.
First mentioned in 1156, the castle was the residence of the Counts of Rechberg until the 16th century. In the early 14th century, Albrecht von Rechberg was attacked by Ulrich von Helfenstein and Eberhard von Staufeneck. The castle, originally built by the family of Scharfenberg, changed owners several times. In the 15th/16th century, the complex was rebuilt, and during the Thirty Years' War, it was attacked. Since 1826, the castle has been uninhabited and was destroyed by several lightning strikes.
Scharfenberg Castle is now privately owned. The owner has carried out extensive preservation and renovation measures. The castle courtyard and the remains of the two main buildings can be visited, but the inhabited tower is not accessible.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: https://commons.wikimedia.org/wiki/File:Burg_Scharfenberg.jpg
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: 48.6693, 9.8114