(Octagon Hall, 1843, KY-107-01) N. of Franklin, Simpson County, KY. US31W N. 6.1 miles from jct with KY100 in Franklin to the house on the E. side of the road at 6040 Bowling Green Rd. (1-19-03, N36° 48.423', W86° 33.430') Photo by Mike MacCarter.