Wildenburg Castle is a landmark visible from afar in the Friesenhagen (or Wildenburg) region and is located on the road that connects Friesenhagen via Wildenburg with the former Wildenburg railroad station. The 20-metre-high keep occupies an eye-catching position in the landscape.
Wildenburg Castle is estimated to have been built in 1230. The actual purpose of Wildenburg Castle was to secure the old "Brüderstraße", an old trade route that led from Cologne to Siegen.
In 1836, some parts of the castle were demolished and sold. From 1239 to 1418, the castle was the ancestral seat of the Wildenburg dynasty of noblemen. Wildenburg Castle then became the property of the Hatzfeld family.
At the beginning of the 19th century, the castle still served as an administrative seat, from which, on Napoleon's instructions, the lordship of Wildenburg was united with Berg. Wildenburg thus became a canton in the Sieg Department of the Grand Duchy of Berg, which was established in 1808.
Between 1986 and 1988, the "remains" of Wildenburg were renovated and restored by the Hatzfeldt Chamber. The lower archway, the masonry of a kennel at the side, a staircase, the former cellar and first floor, as well as the two-storey sabre smithy with guardhouse and protective building including the heavy vaults and the surrounding walls of the former cattle house on the valley side were renovated. The Wildenburg is considered the "most beautiful forester's lodge in Germany", as the forester lives here and is therefore privately owned.