I have another tip for you, visitors of Belgium: the abbey in Tongerlo with its impressive architecture, situated in beautiful landscape, scene of interesting history, keeper of a 16 century excellent copy of Leonardo's Last Supper.
Tongerlo is located about 60 km Northeast of Brussels in the Kempen/Campine area in the province of Antwerp.
A stroll on foot or bike provides you with an opportunity to rest, relax, enjoy and feel revitalized.
https://en.wikipedia.org/wiki/Tongerlo_Abbey