We went to the Whatcom Children's Museum when visiting relatives in Bellingham. My two children, aged 2.5 and 5.5 years old, had a great time and we could have spent hours there. I've been told that the "theme" for the museum's big exhibts changes every four months or so. The exhibits are engaing and very educational, yet not at all boring to the children. Everything is hands-on and there is a wide variety of things for the kids to do and see. We hope to go again!