Carroll County Arkansas (Historic Districts) has 7 places on the National Register of Historic Places including 1 place of National significance. Significant places include Eureka Springs Historic District, Eureka Springs Historic District, Eureka Springs Historic District (Boundary Increase), Lake Leatherwood Park Historic District and Sanitarium Lake Bridges Historic District.
Some of the country's most noteable architects helped create the Carroll County places including Eureka Sanitarium Company. Prominent architectural styles found in Carroll Country are Colonial Revival, Bungalow/Craftsman and Early Commercial.