With annual family memberships starting at $150, it’s hard to beat the Discovery Children’s Museum. Ten individual visits, and you’ll get your money’s worth. The 58,000-square-foot museum is big enough to spend an afternoon—or several—a week. Kids will thrill at the regulars such as Fantasy Festival and Eco City, and the traveling exhibits add variety. Clifford the Big Red Dog and his friends are holding court through September 11. Bonus points if you take part in the museum-wide conga line at closing time. In Symphony Park, 702-382-5437, DiscoveryKidsLV.com.