I think that if you ask most belgian people, they will know it for sure, because when we were kids we were "forced" to go there. At the time it wasn't fun, but it has been renewed and adapted to children too! Interactive activities, very interesting Dinosaur skeletons, minerals,...
It is probably things that you will have already seen before, but it covers a very wide range of science-related topics and also in a fun way! Great time for the kids too!
Tu-Fr: 09:30-17:00
Sa-Su: 10:00-18:00