Abandoned businesses, homes, and rusted cars are all that remains of this stopover town.

A key producer of charcoal iron in the early 1800s, the structure still stands today.

This abandoned prison castle has become an imposing gallery of graffiti art.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

See just what life was like in a 19th-century prospecting town.

This former luxury resort in Kaua'i is now an abandoned relic.

A Saint Nicholas-themed ghost town in the Mojave desert.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

A hillbilly theme park that proved so unpopular the land wouldn't even sell on eBay after it closed.

The 3,600-year-old archeological sensation is considered to be the oldest representation of the cosmos.

A rare permanent monument to the Scottish Travellers.

The tomb of the mythological founder of Padua is not hidden in some obscure crypt, but stands right in the middle of the city square.

Colorful concentric circles honor a small Croatian town's supposed spot at the nucleus of it all.

Two monstrous faces loom over a village in Czechia.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

One man's swirling six-acre monument of stone.

A haunted hot springs hotel that went from healing retreat to asylum before it was restored.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.