Het Zoniënwoud reveals its mysteries. Just 4 km from the city center, the Sonian Forest extends at the gates of Brussels over 45 km². Jump into the saddle and discover this green lung, which has been classified as a UNESCO World Heritage site since 2017. The guide will take you to places and monuments scattered throughout the forest. Discover the former abbey of Groenendael, the valley of the drowned children, the Queen's Chapel, or even the Kapel Onze-Dear-Vrouw van Willerieken, all places of which no one really knows if they are legend or history.