Washington County Wisconsin (Vacant / Not In Use) has 5 places on the National Register of Historic Places including 1 place of Statewide significance. Significant places include Saxonia House, Amity Leather Products Company Factory, Gadow's Mill, St. John of God Roman Catholic Church, Convent, and School and West Bend Chicago and North Western Depot.
Some of the country's most noteable architects helped create the Washington County places including Fred Jr. Dolke, Lockwood Greene and Frost and Granger. Prominent architectural styles found in Washington Country are Bungalow/Craftsman, Gothic Revival and Greek Revival.