Exploring Boston's past and present: 12 walks that trace the creation of the city's man-made land in the central waterfront, Back Bay, South End, Charlestown, and elsewhere. At its founding, Boston was a small peninsula; over the last 375 years the city has doubled in size by filling in the surrounding tidal flats--areas covered with water at high tide and exposed at low. In Walking Tours of Boston's Made Land, historian Nancy...