This research center for rare prosimians is studying how they sleep to help prolong human life.

Rotting dome home spotted near Chapel Hill, North Carolina.

Coca Cola may be "the real thing" but its inventor, buried at this Georgia gravesite, called it a "valuable brain tonic."

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

Military and first responders can test their skills in a Foggy Bottom mock station down in Georgia.

A curious whirlpool formation supposedly capable of entangling or engulfing branches, tree trunks, or whole rafts full of hapless tourists.

The first free library in Georgia features an original Tiffany stained glass window of Mary Willis.

The world's largest set of the ten commandments lay nestled in the heart of the Great Smoky Mountains.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

A wonderland of folk art including the World’s Largest Grit. 

This "Plant Farm Museum" is home to the divinely inspired and visionary outsider artwork of Reverend Howard Finster.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

Crumbling ruins mark the site of a couple's grisly murder in the woods.

The mysterious 855-foot zigzagging stone wall has been baffling people for centuries.

An eerie site of reverence for those who have completed an epic journey.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

FDR hoped to find a cure for polio in this Georgia town's warm springs.

Where school buses go to die and be reborn as whimsical works of art.

Incredible miniature towns and buildings created and decorated with thousands of tiny rocks.

World's largest college campus includes a wildlife sanctuary and a former movie set on more than 28,000 acres.

A mural in rural Georgia welcomes visitors to a fictional Missouri town.

A mysterious inscription may hold a clue about the "Lost Colony" of Roanoke.

The remains of one of America's first radiation testing grounds still rest ominously in a Georgia forest.

One of the world's largest automobile junkyards is a unique landscape of metal and moss.