The World Children's Art Museum in Okazaki

The artwork on display in this museum focuses on pieces by children from around the world, as well as pieces created by famous artists during their childhood.
It displays folk crafts, toys, picture books, and other items from various cultural backgrounds.
They offer a walking tour, and have large play equipment too, so visiting children can have some fun while they're learning.
There are also temporary exhibits aimed at grown-ups.