Boston
Boston is the southern end of the Mystic Link Trail; more specifically the Charlestown neighborhood of Boston. The trail leads to the US Navy Yard where the USS Constitution sits, and can be visited.
Boston itself has many lovely parks where you can walk and even hike.
Below is a Google map of showing where the Mystic Link Trail enters Charlestown.
Featured in Boston

Constitution Wharf
Find great views of downtown Boston from Charlestown.Boston is a real contrast to the start of the trail in North
More Resources in Boston

National Park Service
USS Constitution Museum of the National Park Service

Boston Parks Department
Web page of Boston Parks

AMC Boston
The Boston Chapter headquarters for the Appalachian Mountain Club

Friends of the Public Garden
The non-profit that cares for the Boston Public Garden in cooperation with the City of Boston