(Tiny) hands down, California has more kid-friendly activities and attractions than any other state. Your kids will beg to go to Southern California's theme parks. Get those over with and then introduce them to some of the state’s more subtle draws. Sunny skies lend themselves to outdoor activities. Here's a start: swimming, bodysurfing, snorkeling, bicycling, kayaking, hiking, horseback riding. Many outdoor outfitters and tour operators have dedicated kids' activities. If it's cold and rainy, foggy or snowing outside, you'll find museums and indoor entertainment galore.