Freedom Trail

One of the must-do Boston attractions is to walk the nearly three-mile Freedom Trail, which connects 16 of the city's most historic sites, including the Bunker Hill Monument, the site of the Boston Massacre and the Paul Revere House, among others. Most of the sites are free, though some charge a small fee for tour.

One TripAdvisor user enjoyed the Freedom Trail's mix of history and fitness, saying "We did the walk with the guide leaflet and were fascinated. A new city for us (coming from London) and we understood the history and city development while getting some exercise." Another suggests splurging for the audio guide, which you can pick up and pay for at the information center found inside Boston Common.

For a free Freedom Trail map, visit the trail's website and print your own.