Over 20,000 sets of spice shakers reveal the surprisingly telling history of our most basic spices.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

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

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

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

Mile-long cave system near Great Smoky Mountains.

The secret city built by the Manhattan Project.

This replica of the Greek structure is in the heart of Nashville.

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

More than five miles of underground passageways.

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.

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

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

Home of an evil witch famous within southern folklore.

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 museum to a cave explorer whose tragic death was a media sensation, and whose corpse became a tourist attraction.

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

A former 19th-century tavern, famous for its peach brandy and honey concoction.

A unique home built by Andrew Jackson Caldwell that also served as a military hospital.

This calm grassy field was once a Superfund site full of thousands of nasty chemicals.