Stonehurst was the country house of Robert Treat Paine, Jr., a lawyer, housing reformer and great grandson of a signer of the Declaration of Independence. Located in Waltham, the earliest part of the house was a Second Empire building, designed by Gridley James Fox Bryant and constructed in 1866 for Paine and his wife, Lydia Lyman Paine. This house was moved to a new site atop a ridge and a large addition in the Shingle style was designed by the architect H.H. Richardson. Begun in 1884, the project was almost complete when Richardson died in 1886. In collaboration with Richardson was the great landscape architect, Frederick Law Olmsted. The organic relationship of the completed house and the landscape is a notable feature of what is considered to be an architectural masterpiece. The estate was given to the City of Waltham and is open to the public.