This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

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

Inside this small brick bungalow is a collection of toys intended for the afterlife.

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

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.

An impressive collection is dedicated to the legendary beast.

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

A vast collection of rare, historical, and vintage supercomputers.

A herd of plastic cows hangs out under this transmission tower in rural Georgia.

This collection of ferns from across the globe is the largest assortment in the United States.

The only subterranean ping pong table in Atlanta.

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

The ruins of a cotton mill that was burned in the Civil War are still hidden in a Georgia forest.

Healing Springs that once ran red with soldiers' blood.

An elegant Georgian cemetery best known for the grave of the little girl whose murder on Christmas Day remains unsolved.

The beauty of urban decay, hiding some dark secrets.

Tour the sci-fi-esque reality of governmental disease management.

The world's first time capsule lies behind a welded steel door in Atlanta.

The statues commemorate the legendary mass killing of escaped circus monkeys.