From southern California, to way up north in Alaska...
California:
Legoland -- theme park for ages 2 to 12, in Carlsbad -- has a medieval summer fun Yosemite National Park - stay at a Registered National Landmark hotel, or a "Housekeeping Camp": camping without the hassle of a tent San Diego with Kids - About's Guide for California for Visitors has many suggestions San Francisco - Fisherman's Wharf, Golden Gate Park (with kid-friendly Aquarium, Natural History Museum, and Planetarium), the Exploratorium, Children's Zoo... Monterey- Fisherman's Wharf, Monterey Aquarium; whales, sea lions... Disneyland: celebrating it's 50th birthday for 18 months, starting May 2005 Universal Studios Hollywood - popular with teens, for its thrill rides
Northwest:
Washington: Rosario Resort,Orcas Island- historical & unique Alaska
Alaska Wildland Adventures - Raft the Kenai River, hike in forest, explore Kenai Fjords National Park by boat, learn about native cultures... - continue to Caribbean and Mexico