Two Civil War-era cemeteries stuck between runways at the world's busiest airport.

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

This folk art compound was built by a fortune teller on the advice of three people from the future.

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

An underground magnet for ever-changing street art.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

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

A man's home is his castle.

A white oak with property rights.

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

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

A perfectly preserved abandoned criminal asylum in South Australia.