Simpson County Mississippi has 5 places on the National Register of Historic Places including 4 places of Statewide significance. Significant places include Gatesville Bridge, Lewis, L'Dora, Mound (22SI512), Mendenhall Hotel and Revolving Tables Restaurant, The and Rockport Bridge and Simpson County Courthouse.
Prehistoric cultural affiliation(s) include Middle-Late Woodland dating back to 0.
Some of the country's most noteable architects helped create the Simpson County places including Converse Bridge Co., M.W. Land and Andrew J. Bryan. Prominent architectural styles found in Simpson Country are Classical Revival.