The ghostly remains of an accidental sea.

A toxic ghost town sitting atop a massive coal fire.

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

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A psychedelic labyrinth on the San Francisco bay.

Dramatic river bend surrounds a natural red-rocked pedestal.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

A crumbling hospital from the 1850s on Roosevelt Island.

World's first "penitentiary," meant to be humane, drove men insane.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

World's largest collection of serial killer artwork and other macabre exhibits.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

A huge musical instrument played by the ocean.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

On the waterfront of Sydney, Nova Scotia, a 60-ft. fiddle greets incoming ships.

Possibly the world's largest coin stands just outside of a Canadian science center.

A cozy cafe tells the remarkable story of how one man started with a little red paperclip and wound up with an entire house.

This mundane shopping plaza is named after a gruesome piece of flotsam.