A statewide preservation group has purchased more than $500,000 in conservation and historic preservation restrictions needed to preserve key portions of the Langwater Estate, a historically significant property in Easton. The Langwater project is adjacent to the 36-acre Governor Ames Estate — the former home of Oliver Ames, the state’s 35th governor — which the trustees acquired in June 2012 as a community-centered park. The Langwater Estate protection includes a historic preservation restriction on its iconic stone H.H. Richardson Gate Lodge, said Barbara Erickson, president of the Trustees of Reservations, along with 2.6 surrounding acres, and a conservation restriction on 13 acres to the south of the Gate Lodge. Long–term deed covenants are in place on another three acres of the estate. An official opening of the Governor Ames Estate property is planned for this fall. Two public tours will be scheduled for the Langwater property, which remains private, Erickson said.