Where condemned pirates met their grisly end at the gallows on the River Thames.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

Sleep in a glass pod dangling off a cliff.

A clerical error gave rise to this imaginary micronation in the southwestern corner of Estonia.

This fairy tale-themed amusement park is now abandoned, and childhood metaphors abound.

The location of Puerto Rico's first water bottling plant, thanks to a collaboration between Mother Nature and technology.

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

The old Route 66 town straddling Texas and New Mexico died along with the Main Street of America.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

This amazingly preserved Gold Rush town is a historian's dream.

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

Instead of becoming a power plant, this abandoned complex became a massive letdown.

If astronomy had a ghost, it would look like this observatory.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

The beauty of urban decay, hiding some dark secrets.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

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

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

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

Four-story concrete hotel never opened to customers.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

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

This abandoned Antarctic research station is a Soviet ghost frozen in time.