Peek through a transparent pyramid and drink in the mountain made of books.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

The ancient tomb acts as a calendar that keeps perfect time.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

Pompeii's less famous neighbor is still revealing her secrets.

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

One person's lost luggage is another person's treasure.

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

A crumbling hospital from the 1850s on Roosevelt Island.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

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