Fodor's Expert Review Museon

Museon claims to be "the most fun-packed popular science museum in the Netherlands," and perhaps they're right. Permanent exhibitions center on the origin of the universe and evolution, with hands-on, interactive displays, frequent special exhibitions, and children's workshops on Wednesday and Sunday afternoons (book in advance). The Museon is right next door to the Gemeentemuseum, so you can easily combine a visit to both.