Burg Adendorf, Château in Wachtberg, Germany.

Burg Adendorf is a four-wing castle complex in Wachtberg situated at about 196 meters (643 feet) elevation and surrounded by a protective moat. The buildings display Renaissance architectural features added during the 17th century, while earlier sections retain medieval elements.

Burg Adendorf was first documented in 1337, when Paul von Hüchelhoven and his wife Margarethe von Eschweiler enfeoffed it to Count Wilhelm I of Jülich. It replaced an earlier motte called Hof Cumbe a few hundred metres west, held by the same family in the 14th century. From 1484 it belonged to the von der Leyen family for over 300 years; Hugo Ernst von der Leyen had the fortified complex rebuilt as a Renaissance palace by 1663.

The name Adendorf first appears in 1214 with the noble family "de Aedendorp". Since 2009, civil weddings have been held in the Kaminsaal, and at Ascension the owners Georg and Gabriela Freiherr von Loë host a luxury goods fair called Landpartie on the grounds.

The castle remains in private hands but the owner opens the grounds for special events such as markets and concerts. Check in advance when visits are possible, as the site does not have regular opening hours for general tourism.

The inner courtyard regularly serves as a venue for summer concerts and film productions, giving it an active cultural life today. This modern use connects the historical architecture with contemporary entertainment and transforms the courtyard into more than just a structural feature.