Twin Falls County Idaho (Historic Districts) has 5 places on the National Register of Historic Places including 1 place of Statewide significance. Significant places include Twin Falls City Park Historic District, Toana Freight Wagon Road Historic District, Twin Falls Downtown Historic District, Twin Falls Original Townsite Residential Historic District and Twin Falls Warehouse Historic District.
Some of the country's most noteable architects helped create the Twin Falls County places including Burton Morse, John Moffat, Smith, C. Harvey and et al. Prominent architectural styles found in Twin Falls Country are Art Deco, Bungalow/Craftsman and Classical Revival.