Utah County Utah (Historic Districts) has 15 places on the National Register of Historic Places including 1 place of National significance and 5 places of Statewide significance. Significant places include Timpanogos Cave Historic District (Boundary Increase), Provo Downtown Historic District, Timpanogos Cave Historic District, Timpanogos Cave Historic District (Boundary Increase) and Upper American Fork Hydroelectric Power Plant Historic District.
Some of the country's most noteable architects helped create the Utah County places including Frank C. Kelsey, Multilpe and Willard Young. Prominent architectural styles found in Utah Country are Late Victorian, Bungalow/Craftsman and Late 19th And 20th Century Revivals.