Franklin County Florida has 9 places on the National Register of Historic Places including 2 places of National significance and 4 places of Statewide significance. Significant places include Fort Gadsden Historic Memorial, Porter's Bar Site, Apalachicola Historic District, Crooked River Lighthouse and Pierce Site.
Prehistoric cultural affiliation(s) include Weeden Island, Late Deptford, Fort Walton and Hopewellian dating back to 499 BC. Prominent architectural styles found in Franklin Country are Greek Revival, Late 19th And 20th Century Revivals and Late Victorian.