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

This video store is a horror buff's dream.

John Hendrix predicted the creation of the "Secret City" built as part of the Manhattan Project.

Deep in the Ocala National Forest, a lonesome 19th-century grave.

This twisty sign depicts the chain's first logo.

More than a century after her death, Little Gracie Watson remains one of Savannah's most often-visited residents.

An eerie smiling woman looms above the granite tombstones.

A 19th-century cemetery device to ensure that the prematurely buried would be "saved by the bell."

This stretch of highway is said to be haunted by ghosts of settlers whose graves were paved over.

The final resting place of the most famous outlaw in the Old West.

This improbable contraption was passed down through five generations of industrious Tennesseans.

It's believed the famed author's parents once used this spring to gather water.

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

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

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

Mysterious library of an infamous financier and spiritual seeker.

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

This stone incorrectly marks the 35th parallel, causing some territorial kerfuffles.

A natural sandstone bridge hidden in the Sewanee forest.

More than five miles of underground passageways.

This mansion turned restaurant was once a pitstop for Al Capone during his travels.

This stone memorial pays tribute to a massive shipwreck which was sadly overshadowed by the death of John Wilkes Booth.

The world's largest version of this iconic puzzle cube is located in Knoxville, Tennessee.

An underwater city for the dead.