In Rickwood Caverns, visitors can travel hundreds of feet underground and see beautiful formations unique to the region.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

One of almost 200 confirmed impact craters in the entire world, untouched for tens of millions of years.

An autonomous oak in Alabama.

Follow the steps, and this roadside artwork will teach you how to dance.

Since it formed millions of years ago, this cave system has been a sacred burial ground, a Prohibition-era speakeasy, and the center of an amusement park.

This 5-by-6-foot wooden hut is the smallest historic post office in the U.S.

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

A historic blockhouse and trading post give a glimpse into the early colonial history of South Carolina.

A natural history museum with an extensive collection of bird dioramas.

An impressive collection is dedicated to the legendary beast.

This lovely burial mound is actually a replica that was installed after archeologists excavated the original.

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

The site of the notorious Camp Sumter Prison is now a peaceful memorial.

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

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

Located on the campus of Emory University, this museum is filled with objects from the Americas to ancient Greece.

The only subterranean ping pong table in Atlanta.

A large boulder marks the place where the island of Manhattan was purportedly "sold" to the Dutch.

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

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

Natural cathedral designed by Italian artist Giuliano Mauri.

Five painted skeletons are hiding behind a church in this tiny village in the Italian Alps.