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

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

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

The secret city built by the Manhattan Project.

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 key producer of charcoal iron in the early 1800s, the structure still stands today.

The remains of this visionary community can still be found much as it was a century ago.

This limestone outcropping was once a ceremonial site for ancient Native Americans.

In the hometown of the Grand Ole Opry star is a larger-than-life memorial statue made entirely from chicken wire.

Veritable museum of 20th century country music history.

Crumbling Kennedys and a decaying Tecumseh are just some of the haunting remains of one man's cement art trail.

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

Home of an evil witch famous within southern folklore.

This tiny 19th-century tunnel was built so a man could move his cows from one field to another.

This abandoned nuclear cooling tower casts a shadow over a bucolic town.

The first full-scale tunnel built in America is short but scenic.

Dinosaurs invade a suburban Nashville neighborhood.

This park contains one of the largest concentrations of cedar glades, a unique and rare ecosystem.

This defunct, fortress-like prison has been the setting for several movies.

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

One Confederate statue that accurately reflects the ugliness of its subject.

This quirky local sculpture is quite literally a fish out of water.

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