Massachusetts's ghost towns are mostly colonial hill settlements, mill villages and fishing hamlets that people walked away from, and four whole towns the state erased for Boston's water. Dana, Enfield, Greenwich and Prescott were disincorporated on April 28, 1938, for the Quabbin Reservoir; about 2,500 people lost their homes, and the reservoir filled by 1946. Most of Enfield and Greenwich are under water. Dana Common and the Prescott Peninsula are still dry land.
Elsewhere the land simply emptied. Dogtown, the upland village on Cape Ann, was all but abandoned by 1828. The Long Point fishing village at the tip of Cape Cod floated its houses across Provincetown Harbor in the 1850s, and Whitewash Village on Monomoy lost its harbor to a storm around 1860. Haywardville, where rubber goods were made on Spot Pond Brook, was bought by the state in 1894 for the Middlesex Fells. In the hills, the Davis pyrite mine in Rowe closed after a 1911 collapse, and Catamount and Questing were farm settlements left to the woods.
What remains is cellar holes, stone walls, carved boulders and a few markers, much of it on state or land-trust property open to walkers.