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.

Visit this playground of waterfalls, caves and sinkholes.

All that's left of the quintessential "cabin in the woods."

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

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.

Home of an evil witch famous within southern folklore.

Beautiful waterfalls grace a canyon visibly torn by a violent tornado.

Thousands of unique minerals, including some of the most impressive fluorite crystals in the world.

The largest cemetery in Louisville is the final resting place of Col. Sanders and Muhammad Ali.

This 19th century mansion façade adorned with immigrant patriotism is a symbol of Louisville’s history.

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

This boulder stays on its mountain thanks to a huge chain and on the map due to local legend.

Everyone and everything one man ever loved and lost, now stare into the East for all eternity.

One of the few surviving "Wigwam"-themed motels.

An abandoned theme park with a strange and tumultuous past.

Prehistoric animals decorate this popular outdoor park.

Moonbows over Kentucky.

A rusted metal giant pays tribute to Birmingham’s industrial past.

This space rock fragment is one of the only meteors to have ever struck a human.

A collection of huge Pre-Colombian structures in Alabama.

Bad farming practices caused this unnatural natural wonder.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.