WOW! Children's Museum is an interactive museum in Lafayette, Colorado, created for children under 12 and centered on hands-on play and learning. Founded in 1996 by Lisa and Dario Attallah as World of Wonder, it moved from Louisville to Lafayette in 2004 and later expanded in 2019 with outdoor programming space. The museum has emphasized accessibility through sensory-friendly events for children with autism or sensory processing disorder and through a sensory room. In 2015, it was recognized among the nation's top 25 children's museums and welcomed its millionth visitor during a year of record-setting attendance.