Le Duc Castle, locally known as Château le Duc, lies in the woods east of the village of Ucimont, in the province of Luxembourg in the Wallonia region in Belgium.
Le Duc Castle probably wasn’t a real castle. More probably it was a fortification dating back to Carolingian times (7th till 9th century) which fell under the jurisdiction of Bouillon. Therefore it is said that is was owned by the ancestors of Godfrey of Bouillon.
It consisted of a -more or less- circular hilltop, on one side protected by a stone wall with two towers and two earthen walls probably topped by wooden palisades.
At present only foundations of the walls, two towers, the earthen walls and a cistern remain. So there is not very much to see but the location is beautiful. Also the ca. 20 minutes walk uphill, through the woods is very enjoyable. At the location of the presumed entrance is a simple, small reconstruction of how the site might have looked. Even this reconstruction is now ruined.
The site of Le Duc Castle is freely accessible.