KENTUCKY
Gray's Arch, Red River Gorge
Natural Rock Bridge, Red River Gorge
Cumberland Falls State Park
Natural Bridge State Park
Mammoth Cave National Park
Stalactites & Stalagmites, Mammoth Cave National Park
Lincoln Birthplace National Historic Site, Hodgenville, KY
Lincoln Birthplace Cabin
Lincoln Boyhood Home Historic Site, Knob Creek Hill, KY
Belle of Louisville, Oldest operating Paddlewheeler in the U.S., Louisville, KY