Beneath the surface, something slithers. And if you find it, prepare to be slimed and glowing.

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

Like Mars, but much closer.

Interactive modern and vintage submarine equipment, World War II relics, and submarine attire.

One-of-a-kind museum inside the first Boeing 747-400 ever made.

Developers built a Walmart around one family's plot and constructed a mausoleum in the parking lot.

An abandoned railroad tunnel forgotten by time awaits inquisitive hikers.

3/4-scale model of the White House in Atlanta, Georgia.

Atlanta's strange assortment of concrete pillars inspires reflection in some, confusion in others.

A colorful square marks the heart of the city's LGBTQ community.

These ancient ritual mounds are our best window into the culture of the ancient Mississippians.

A white oak with property rights.

A man's home is his castle.

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

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

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

Suspended above the ground in a thicket of towering Georgia trees is a modern architectural wonder.

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

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

An underground magnet for ever-changing street art.

Ruins of a Carnegie family mansion on Cumberland Island.

The largest cemetery in the American Southeast is a hidden gem near the heart of Atlanta.

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

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