Schloss Hexenagger, Medieval castle near Altmannstein, Germany

Schloss Hexenagger is a Baroque castle on a hilltop spur above the village of Hexenagger in the Schambach valley, a side valley of the Altmühl near Altmannstein. Its present form, with its chapel, was rebuilt between 1625 and 1629 on the site of a castle destroyed in the Thirty Years' War. The complex is listed as a Bavarian architectural monument (D-1-76-112-16).

The medieval castle was built by the Lords of Hexenagger, documented from 928 to 1480. In 1485 it passed by marriage to the Counts of Helfenstein, who sold it in 1528 to Duke Wilhelm of Bavaria; he granted it as a fief to the Muggenthalers. After its destruction in the Thirty Years' War, the Muggenthalers rebuilt it as a Baroque palace with chapel between 1625 and 1629.

The castle's chapel was rebuilt between 1625 and 1629 as part of the Baroque reconstruction after the Thirty Years' War. Today the privately owned complex hosts summer medieval festivals, weddings, company events and Christmas markets, which fund its restoration.

The castle is privately owned and does not permit public interior visits, though it can be rented for events. Visitors can explore the exterior grounds and view the details of the walls and towers from outside.

The castle was first recorded in 982 in a document from the Monastery of St. Emmeram in Regensburg, which suggests a tenth-century origin. Elector Karl Albrecht, later Emperor Charles VII, bought it in 1724 as a gift for his mistress, Countess Maria Josepha von Morawitzky. The Leichtfuß family, sixth generation of the von Weidenbach line, still lives there and funds restoration through medieval festivals and Christmas markets.