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

Mai Tais and Navy Grog served up in one of the original tiki bars.

Bad farming practices caused this unnatural natural wonder.

Ruins of a Carnegie family mansion on Cumberland Island.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

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

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

This quirky curiosity shop takes its cues from the world's bazaars.

This two-room shotgun shack in Tupelo is the birthplace of a King.

This monumental Jesus is often referred to as "Our Milk Carton With Arms."

This set of rickety spaceships are prepared to give alien travelers a place to relax and go to the bathroom.

This bare tree might not have leaves but it is constantly clothed in festive decorations left by mysterious local benefactors.

A mailbox that saved a nature reserve.

Divinely-inspired village houses 6,000 dolls, plus strange and lovely outsider art.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

An underground magnet for ever-changing street art.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

Every president in history is immortalized in bronze in downtown Rapid City.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.