Plymouth Antiquarian Society 126 Water St, Plymouth, MA02360 The Plymouth Antiquarian Society, founded in 1919, is Plymouth's largest organization dedicated to preserving historic…More houses and landmarks. The Society owns and maintains three historic houses from different centuries: the 1677 Harlow House, the 1749 Spooner House and the 1809 Hedge House and an ancient Native American site, Sacrifice Rock. Since 1920, PAS has welcomed the public to its historic properties for tours, exhibits and programs. The historic houses tell the story of everyday life in Plymouth from the mid-1600s to the present, with period rooms featuring early American furnishings and domestic artifacts. The Society also offers a seasonal calendar of special events and a children's summer series on local history. Membership is open to the public.