Clallam County Washington (Vacant / Not In Use) has 4 places on the National Register of Historic Places including 2 places of Statewide significance. Significant places include Pyramid Peak Aircraft Warning Service Lookout and Roose, Peter, Homestead, Aircraft Warning Service Observation Tower, Blue Mountain School.
Some of the country's most noteable architects helped create the Clallam County places including U.S. Army, Peter Roose and Fred and Jean Cook. Prominent architectural styles found in Clallam Country are Late 19th And Early 20th Century American Movements.