Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

The world's longest known cave system.

The history of whiskey and all of its boozy glory, from Colonial days to modern American cocktail culture.

World's largest collection of Coke-related items not held by the Coca-Cola company.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

An equine tribute in a charming Southern city that calls itself "The Horse Capital of the World."

This small museum is kept in a house that was integral to the genesis of Uncle Tom's Cabin.

One of the last few period-correct, hand-operated canal locks in the country.

Deep scars on the earth left by the Ice Age.

Take a drunken tour inside the world's largest known geode.

A history of tragedy and a pile of eerie stories have contributed to this house's consistent ranking as one of the most haunted places in Ohio.

A collection of Witchcraft artifacts and occult paraphernalia started by the leader of the Long Island Coven.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

One of the few places where you can explore a 1918 paddlewheel steamboat from stem to stern.

A rare particle accelerator with a tremendous energy range is tucked away at Ohio University.

A slab of sandstone covered with mysterious 1,000-year-old rock carvings from a vanished North American culture.

The largest earthwork effigy in the world.

A former nuclear facility during the Cold War turned nature preserve.

A castle built by an eccentric medieval enthusiast in rural Ohio.

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

Rare recess caves fill this unbelievably beautiful Ohio park.

The mounds at this site were reconstructed with the help of archaeologists and historians.

The largest ancient burial mound in Ohio.