Franklin County Missouri (Historic Districts) has 9 places on the National Register of Historic Places including 1 place of Statewide significance. Significant places include Meramec State Park Beach Area Historic District, Brehe Farmstead Historic District, Busch, John B., Brewery Historic District, Downtown Washington Historic District and Locust Street Historic District.
Some of the country's most noteable architects helped create the Franklin County places including National Park Service, Goodrich, Francis, et al., George Waldrum, Rudy Willenbrink, Ulrich W. Busch, Herman H. Beinke and Hirsch & Watson Helfenstellar. Prominent architectural styles found in Franklin Country are Queen Anne, Italianate and Art Deco.