1. Freedom Trail
What is it: A three-mile trail through Boston highlighting key sites in the history of the U.S.
Why go: Boston is a very walkable city, and a great way to see the city while getting a history lesson is to follow the well-marked Freedom Trail. You’ll start at Faneuil Hall, where revolutionaries and abolitionists gathered, through the atmospheric North End, past the Paul Revere House, the Old State House, crumbling gravesites, and through narrow city streets all the way to Charlestown, home of “Old Ironsides.”