In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

On the Oregon coast there is a natural hole that seems to be draining the sea.

A crumbling hospital from the 1850s on Roosevelt Island.

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.

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

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

A terrific purveyor of natural history objects and curios.

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

A cemetery housing wild west legends in South Dakota.

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

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

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

Site of the 1879 Cheyenne Outbreak and the site where famed Sioux chief Crazy Horse met his fate.

When an ancient supervolcano erupted, some of Nebraska's prehistoric animals were forever preserved in ash.

The quirky collection includes treasures like Elvis' underwear, Bob Barker's toothbrush, and hundreds of sock monkeys.