Every second Sunday of the month you can attend, in the Forest Museum Jan van Ruusbroec in Groenendaal (Hoeilaart), an interesting lecture. Each lecture will be given in Dutch by another guest speaker, all of them experts in their field. In the afternoon a walk with, in many cases, the theme of the lecture, starts from the Forest Museum.

The arboretum of Groenendaal, a living collection of trees and shrubs set in Groenendaal (Hoeilaart). Possibility for a "taste and do hike".