Moonbows over Kentucky.

A bronze sculpture honors the 12 black students who attended the first integrated public high school in the segregated South.

Over a dozen Native American earth mounds dating back over 2,000 years dot this Tennessee archaeological park.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

A failed utopian experiment for British expats in the American South is now a Victorian village frozen in time.

Mile-long cave system near Great Smoky Mountains.

Walk the whole Mississippi River!

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Home to drunken tower-climbing goats... seriously.

Visit this playground of waterfalls, caves and sinkholes.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Enormous lake at the bottom of a unique cave system.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

A 131-year-old wunderkammer of Texas history.

A master plumber has turned his love of art and toilets into a folk museum that's not taking the piss.

The only museum dedicated to the history of the "Magic Lantern," a medieval slide projector.

The cremains of those who donated their bodies to science are buried in a tiny cemetery behind the building.

A former fortified tower now houses a collection of classic communications equipment.

Remembering the Alamo with a full-scale replica of the 1836 city.

An abandoned movie set in the desert of West Texas.

Ghost town with a beer-drinking goat for mayor.

The largest self-built castle in the U.S., six decades in the making.