(Massachusetts)
Greycourt State Park is a public recreation area covering 24 acres (9.7 ha) atop the partially restored ruins of the Charles H. Tenney estate in Methuen, Massachusetts. The state park is a satellite of Lawrence Heritage State Park managed by the Department of Conservation and Recreation and the City of Methuen. (Ref: https://en.wikipedia.org/wiki/Greycourt_State_Park)