In New England today, there are megalithic stones, stone chambers and structures, carvings and petroglyphs, even an unidentified skeleton in armor that defy easy explanation. From Maine to Massachusetts, this work presents an examination of various unexplained historical remains in New England. From the most notorious to the lesser known, it explores not only the layout and dimensions of such sites—some reminiscent of Stonehenge with their huge stones, astronomical alignments and undiscovered purposes—but also the history and possible explanations for their existence. Theories regarding Norse, Phoenician, Irish, Celtic and Native American origins are presented here in an impartial and logical manner. Sites discussed include Mystery Hill in North Salem, New Hampshire (also known as America's Stonehenge); Dighton Rock in Berkley, Massachusetts; Newport Tower in Newport, Rhode Island; and the Bellows Falls Petroglyphs in Bellows Falls, Vermont. An appendix provides information regarding sites open to the public.