The children's museum advertises that the place is...

The children's museum advertises that the place is aimed at 5-12 year olds, but you can go there as soon as the children are walking. There are plenty of activities of all kinds and children can enjoy a space that has been completely reserved for them. It's really super.
Next to the children's museum, Parc Jadot is open more often. Pay attention to the timetables:
January / February / March: 9 am-5pm
April / May: 9 am-6pm
June / July / August: 9 am-7pm
September: 9 am-6pm
October / November / December: 9 am-5pm