Guilaume-Joseph de Harlez started to built the castle in 1758. The finishing touch was added in 1770 by his son Simon-Joseph de Harlez in 1770.
The interior of the castle is lavishly decorated witch rococo stucco and neo classical stucco. You also can admire numerous paintings by Jean-Diedonné Deneux.
Château de Deulin is curently inhabited by Stéphane and Dominique de Harlez de Deulin and their children. The castle is sometimes open for visits and you also
can rent parts for weddings and other festivities. You can also view the majestic castle from the public road.