Fürsteneck Castle, Medieval fortress in Eiterfeld, Germany.

Fürsteneck Castle stands at 406 metres on the Wittfeld plateau near Eiterfeld. Its ring wall and gate are older than the 1309 first mention; the south entrance holds a Romanesque twin window dated to the 12th century. The old residential tower (donjon) has bevelled quoins, and the north tower aligns flush with the outer walls.

First recorded in 1309 but likely constructed one or two centuries earlier, Fürsteneck Castle was originally associated with the monastery of Fulda before transitioning to state ownership following secularization in 1802.

Since 1952, the castle has functioned as an educational academy offering nearly 200 courses annually to approximately 4,000 participants, including workshops in medieval music and traditional instrument studies like the Nyckelharpa.

Located at coordinates 50.7764°N latitude and 9.80806°E longitude between Fulda and Bad Hersfeld, the castle supports around 15,000 overnight stays each year and provides detailed visiting information through its official website.

The south wall above the main entrance holds a Romanesque twin window that specialists date to the 12th century, older than the castle's first written mention of 1309. A second such window sits in the west wall, and the north tower runs flush with the outer walls, a feature linked to castles built before the Crusades.