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

The Hohentrüdingen ruin, a remnant of a fortification, rises on a hill above the district of Hohentrüdingen. In the High Middle Ages, it was considered the largest of its kind between the middle Wörnitz and Altmühl rivers.
History+
Hohentrüdingen Castle was built by the Imperial Counts of Truhendingen at the end of the 11th century. Its first documented mention was in 1129 in a document from Eichstätt. The Truhendingens received the land for the construction of the castle as a fief from the Bishop of the Prince-Bishopric of Eichstätt and also took over the Vogtship of the possessions of Heidenheim Monastery in the middle of the 12th century. Ownership changed: around 1340, the Counts of Schaumberg are mentioned, in 1359 Albrecht von Wartenberg, and in 1363 Count Ludwig von Oettingen. Due to the increasing indebtedness of the Truhendingens and their extinction in 1424, the castle passed to the Burgraves of Nuremberg as early as 1404. In 1716, the upper part of the tower was demolished.
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: 49.0012, 10.6975