Located in the village of Schoenfels in the Mamer Valley between Kopstal and Mersch, it now belongs to the State of Luxembourg.
In 1813, his son, François-Romain de Gaillot, sold the castle to Jean-Baptiste Thorn-Suttor, governor of the Province of Luxembourg during the Belgian period (1831-1839).
The Belgian senator Jacques Engler bought the castle in 1840 and left it to his son-in-law Baron Auguste Goethals who built a residence beside the keep.
In 1948, the Luxembourgish industrialist Camille Weiss bought the property but sold it in 1971 to the Luxembourg State.
[1] On completing its current restoration of the keep, the State intends to open a visitor centre for the Mamer Valley Nature Reserve and offices for the Forestry Administration.