Clay County Missouri (Historic Districts) has 9 places on the National Register of Historic Places including 1 place of National significance and 1 place of Statewide significance. Significant places include Watkins Mill and Odd Fellows Home District, Arthur-Leonard Historic District, Clardy Heights Historic District and Dougherty-Prospect Heights Historic District.
Some of the country's most noteable architects helped create the Clay County places including Waltus Watkins, William B. Ittner, Frank J. Jackson, William F. Schrage, A.F. Haeussler, Louis S. Curtiss and Wight & Wight. Prominent architectural styles found in Clay Country are Late Victorian, Bungalow/Craftsman and Late 19th And 20th Century Revivals.