"Arboretum Wespelaar is situated on the border of the triangle Brussels - Mechelen - Leuven. Philippe de Spoelberch, a passionate dendrologist, started his botanical collections in Herkenrode in the 1970’s. In order to accommodate ever more plants, he decided to extend the collection towards the north of his garden, on what would later become the Arboretum Wespelaar. The Arboretum is managed since 2001 by the Foundation Arboretum Wespelaar, which was set up to guarantee the survival of the collections and to arrange for their opening to the public. Today, about 2000 different species and cultivated varieties can be discovered on the 20 hectare grounds, with the main focus being on trees and shrubs from known wild origin".