These disused steel furnaces are now haunting ruins that may one day be a national park.

There aren't too many operational funiculars around, but Pittsburgh has two!

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

This little museum in the town where zombies were born celebrates the living dead.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

A toxic ghost town sitting atop a massive coal fire.

Resting place of Hollywood's immortals is also site of summer film screenings.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

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

A snapshot of the city's fascinating voodoo culture.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

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

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

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

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

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

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

A terrific purveyor of natural history objects and curios.