Washington County New York (Vacant / Not In Use) has 4 places on the National Register of Historic Places including 2 places of Statewide significance. Significant places include Champlain Canal and Rexleigh Covered Bridge, DeRidder Homestead, Hebron Valley Grange No. 1103.
Some of the country's most noteable architects helped create the Washington County places including Benjamin Wright and John B. Jarvis. Prominent architectural styles found in Washington Country are Federal and Greek Revival.