Warren County Missouri (Vacant / Not In Use) has 6 places on the National Register of Historic Places including 1 place of Statewide significance. Significant places include Callaway, Flanders, House, Borgmann Mill, Fortmann, Herman H., Building, Marthasville Hardware Building and Southwestern Bell Repeater Station--Wright City.
Some of the country's most noteable architects helped create the Warren County places including Knight, W.J. & Co., et al., Teach Callaway, Frederich W. Borgmann, John Mittler and Irving R. Timlin. Prominent architectural styles found in Warren Country are Early Commercial, Federal and Late Victorian.