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

Dinosaurs invade a suburban Nashville neighborhood.

This gravestone and its inscription inspired a movement that has spanned generations and saved countless lives.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

A grove of colossal man-made flowers built to collect the sun's rays.

This structure among the trees was the result of divine inspiration.

An engraved boulder marks the spot where Patsy Cline's life ended in a plane crash.

These early tent-shaped grave coverings are unique to Appalachia.

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.

The small cave that housed Tennessee's "first citizen."

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

Mile-long cave system near Great Smoky Mountains.

More than five miles of underground passageways.

Visit this playground of waterfalls, caves and sinkholes.

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."

The secret city built by the Manhattan Project.

Home of an evil witch famous within southern folklore.

An abandoned meat mecca now serves as an excellent locale for urban exploration.

Man-made geyser that rises to the exact height of the Gateway Arch.

Spanking machines, fake goats, and more devices of humiliation are on display in this museum of fraternal initiation devices.

In the Shawnee National Forest, amazing rock formations peer through the treeline.

World's second largest particle accelerator, where nature reveals its secrets.