Hiding behind a grocery store is a spectacular cavern carved as part of an old limestone quarry.

This large cave is a summer home to thousands of bats and has a rich history dating back to prehistoric times.

An abandoned town is hidden in Great Smoky Mountains National Park.

The site of the one of the most deadly train wrecks in American history.

In one of America’s oldest mountain ranges, a long-awaited section of a scenic highway is now open to the public.

This former maximum-security prison is creepy, sobering, and supposedly haunted.

Walk the whole Mississippi River!

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

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

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

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

The secret city built by the Manhattan Project.

More than five miles of underground passageways.

Railroad came. People came. Railroad left. Town died.

Visit this playground of waterfalls, caves and sinkholes.

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

Enormous lake at the bottom of a unique cave system.

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

Home of an evil witch famous within southern folklore.

This grave marks the final resting place of a legendary frontiersman... unless it doesn't.

You can climb to the summit of Black Mountain, as long as you sign the waiver.

Locals place their offerings on this nightmarish gnarled tree so the witches won't summon another storm.

Origin of the blue-skinned Fugates of eastern Kentucky.

Rabbit Hash is a heaping slice of Americana from another era, with a very peculiar origin behind its unusual name.