Mellette County South Dakota has 2 places on the National Register of Historic Places including 2 places of Statewide significance. Significant places include South Dakota Dept. of Transportation Bridge No. 48-244-204 and Stamford Bridge, South Dakota Dept. of Transportation Bridge No. 48-244-204, Stamford Bridge.
Some of the country's most noteable architects helped create the Mellette County places including South Dakota Highway Commission. Prominent architectural styles found in Mellette Country are .