Florida Subcategories This category has the following 4 subcategories, out of 4 total. B Transportation buildings and structures on the National Register of Historic Places in Florida (6 C, 4 P)N Roads on the National Register of Historic Places in Florida (6 P)R Rail transportation on the National Register of Historic Places in Florida (1 C, 1 P)S Ships on the National Register of Historic Places in Florida (1 C, 5 P)