Gaasbeek Castle, today a national museum, is located in the municipality of Lennik in the province of Flemish Brabant, Belgium.
Wikipedia https://en.wikipedia.org/wiki/Gaasbeek_Castle
Official Website https://www.kasteelvangaasbeek.be/
Address 40 Kasteelstraat, 1750, Belgium
Coordinates 50°47'47.887" N 4°11'49.628" E