The remains of the Castle can be visited
Wart Castle (Ruin)

The Wart Ruin, once a medieval outpost or watchtower, stands at approximately 445 meters above sea level in Nassach in the Rems-Murr district of Baden-Württemberg. Originally built by the Margraves of Baden, remnants of its walls remain.
History+
The construction of Wart Castle took place either at the beginning of the 12th century or around the year 1200 by the Margraves of Baden. It served as a castle for ministeriales in the area between the fortifications of Löwenstein, Lichtenberg, and Reichenberg. In 1297, the castle passed to the Counts of Württemberg through marriage, who later granted it as a fief. Around 1435, the castle was pledged to Konrad von Stammheim, and during this period, amber, gold, and silver were sought in the surrounding area. In 1509, the castle changed hands to Knight Eitelhans Nothaft, who sold it in 1524 to Trautwein Vaihinger von Schöntal. During the Peasants' War in 1525, the castle was plundered and set on fire by rebellious peasants.
Source: Wikipedia · Licence: CC BY-SA 4.0
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: 49.0186, 9.4132