Underground Wonders: Mammoth Cave National Park in central Kentucky features over 400 miles of mapped, explorable passages, making it the longest cave system discovered on Earth.
The Bourbon Capital: Kentucky produces nearly 95% of the world’s supply of bourbon. There are actually over 10 million barrels of aging bourbon resting in the state, easily outnumbering its roughly 4.5 million human residents.
Singing “Happy Birthday”: The iconic “Happy Birthday to You” tune was originally written as a classroom greeting by two Louisville sisters, Mildred and Patty Hill.