Much of the downtown area was placed on the National Register of Historic Places in 1984 for its architecture and history. Many of the shops, public buildings, and residences date back to the days when Franklin gained an immense amount of oil wealth. Notable historic buildings include the Courthouse, Public Library, churches, the Liberty Street shop buildings, and the Galena-Signal Oil Company building, which was once an oil refinery. The houses along Elk Street are exquisite examples of the Greek Revival architecture. Many other architectural wonders can be found scattered throughout the city.
