Here are 100 must-see places around the United States, from Niagara Falls to the La Brea Tar Pits. We cover everything from the action and adventure you'll find ballooning over the Arizona desert and dog-sledding in Alaska to historic spots like Puerto Rico's coastal fortress and California's Gold Rush Country.
So pack your bags, strap the kids into the car, and hit the road -- nobody's getting any younger.
Photo Caption: Lighthouse in Nantucket, Massachusetts.
