This museum showcases the history and contributions of the U.S. Army to the medical industry, both on the battlefield and off.

This tiny cluster of abandoned buildings looks like the future of the ghost town - today!

This massive airship factory is so large that it has its own indoor weather.

A mother's mourning for her lost son is remembered in this small park embedded with his memory.

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

This abandoned Civil War fortress is slowly being swallowed by the waters of Lake Borgne.

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

This abandoned lighthouse looks like a rusting oil rig, but has managed to survive a number of storms.

One man's ambition created this psychedelic log home.

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

The first spinning jail built in the United States is the only one that still turns.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

The remains of one of America's first radiation testing grounds still rest ominously in a Georgia forest.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

This tall Massachusetts folly got its name thanks to all of the purple prose its vistas inspired.

This abandoned prison castle has become an imposing gallery of graffiti art.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

Pirates had to be ousted from the land where this now ruined Louisiana fortress was built.

The crumbling ruins of this southern American fort have survived storms, war, and cults.

The largest wooden building in the world now houses a fascinating collection of aircraft.