This is a fun indoor activity. Especially recommended for young Lego fans!
Lego Discovery Center Scheveningen is a fun place for young Lego fans. Combine it with Sea Life or one of the other activities in the Hague and around and you got a great weekend!
Plopsa Station Antwerp is a fun place for younger kids in the heart of Antwerp (with video)
Temporary expo with 80 big and small dinosaurs in 7,000m2 for little dino fans