The 1912 U.S. Post Office was built on the former site of Atwater Hall and the first Ontario County Historical Society building, a former law office. Mary Clark Thompson donated the land and architectural plans. Sonnenberg Mansion architect, Francis R. Allen and Charles Collins of Boston, designed the Classical Revival structured with a large entrance portico. Doric columns support the three-member entablature. The postal service vacated the building in 1991 and the structure is now part of the YMCA.
R. United States Post Office, 30 North Main Street
The 1912 U.S. Post Office was built on the former site of Atwater Hall and the first Ontario County Historical Society building, a former law office. Mary Clark Thompson donated the land and architectural plans. Sonnenberg Mansion architect, Francis R. Allen and Charles Collins of Boston, designed the Classical Revival structured with a large entrance portico. Doric columns support the three-member entablature. The postal service vacated the building in 1991 and the structure is now part of the YMCA.
