Valley County Idaho (Vacant / Not In Use) has 12 places on the National Register of Historic Places including 9 places of Statewide significance. Significant places include Jarvi, Thomas, Homestead, Johnson, John G., (Rintakangas) Homestead, Johnson, John S., (Sampila) Homestead, Korvola, John, Homestead and Laituri, Gust, Homestead.
Some of the country's most noteable architects helped create the Valley County places including Gust Laituri and Heikki & Matt Niemala. Prominent architectural styles found in Valley Country are .