World's oldest and largest space launch facility, once a secret missile testing site.

America's smallest "national forest" has only 33 trees.

This enormous abandoned prison was once dubbed the "Bastille of Romania."

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

The walls and streets of the ancient city are peppered with penises.

Erotic art covers the walls of the largest ancient pleasure palace.

Ancient snack bar of the Roman Empire re-opened.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

Live long and prosper in Vulcan, Alberta.

The frozen bubbles that form on the icy surface of this Canadian lake contain enough methane to create a small explosion.

The most famous location in China was home to whole dynasties worth of imperial rulers.

The once highest point in China blends symbolic design with a kick of adrenaline.

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

Glass and concrete building designed by Albert Kahn.

Dilapidated Mayan-themed ballroom was one of Detroit's most popular venues through the 40s.

Opulent downtown movie theater now houses cars as an indoor parking garage.

A Beaux-Arts triumph set to become Ford's innovation campus

One man's attempt to create an artistic wonder on a run-down block in Detroit.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

This Detroit ruin was once a gothic bastion of its community, but now it stands as a haunting ruin.

Abandoned concert venue legendary for its rock counterculture.

Clusters of abandoned buildings hint at the facility's 144-year history with psychiatric health.