Nestled in a lush green setting in the heart of the Sonian Forest, the remains of Trois-Fontaines Castle reveal themselves along a woodland path. Of the estate, first mentioned in written records in 1329, only the main residence and the remains of the imposing gate tower to which it was attached still survive. Its functions, always linked to the forest belonging to the Dukes of Brabant, evolved over time: hunting lodge, prison for those guilty of violating forest laws (poaching, wood theft, etc.), residence of the forest warden, and forester’s house.

The building has recently undergone a remarkable restoration. These extensive works were closely monitored by an archaeological team, who will welcome visitors on site and guide them from cellar… to attic. Particular attention will be paid to the construction materials — stone, brick, and wood. Several objects uncovered during the excavations will also be presented on site.

Collaboration: urban.brussels, Université de Liège, Museum Art & History

Book your guided tour by sending an email to archeologie@urban.brussels, specifying the type of event/the site, the number of people, the time and the language.

Practical information

Guided tours on Saturday 13/06/2026 and Sunday 14/06/2026

Meeting point: Château de Trois-Fontaines , chaussée de Wavre 2241, 1160 Auderghem

Maximum 15 persons per guided tour

Reservation compulsory

Not accessible for PRM

Saturday 13/06/2026

Schedule of guided tours (Duration of the visit: 50 min)

Guided tours only in French

9.30 (FR)

10.00 (FR)

10.30 (FR)

11.00 (FR)

11.30 (FR)

12.00 (FR)

Sunday 14/06/2026

Schedule of guided tours (Duration of the visit: 50 min)

Guided tours only in French

9.30 (FR)

10.45 (FR)

12.00 (FR)

14.45 (FR)

16.00 (FR)

17.15 (FR)