Why you've got to go: Boston is the birthplace of the American Revolution! Kids will have so much such fun following this 2 ½-mile red-brick road, they won’t even realize it's "educational."
What to do: Pick up a self-guided map from any visitors center, and start the trail at Boston Commons (Redcoats camped here), passing Granary Burying Grounds (see graves of John Hancock, Sam Adams and Paul Revere), the Boston Massacre Site, and Paul Revere’s House. Tour at your own pace, stopping along the way for lunch at Quincy Market. And don’t be afraid to veer off the trail. At the brand-new Boston Tea Party Ships & Museum, opening June 2012, kids can reenact the revolt by hurling tethered tea crates into Boston Harbor.