The remnants of the fortress that saved Georgia from the Spanish still stand guard on their swampy island.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

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

Like Mars, but much closer.

This intricate Hindu temple is the largest of its kind outside of India itself and was constructed like a giant puzzle.

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

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

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

Tombstone of a dog that greeted passengers at the Southern Railway Depot.

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

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

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