This former POW camp was transformed into a Cold War missile installation.

A mountaintop space observatory that is certified dark.

An enormous goose sits atop this nest-shaped home.

This boulder stays on its mountain thanks to a huge chain and on the map due to local legend.

A pink cottage covered in hearts served as a haven and a resting place for LGBTQ activists.

Tiny historical streetcars wind through a small scale version of Crescent City in this whimsical train garden.

Professional and amateur dioramas, taxidermy, and oddities all located in an attic above a gallery.

This museum chronicles the history of a leprosy quarantine hospital that then became a refuge.

Alabama has a fiberglass Stonehenge. With apologies to Spinal Tap, this one is full-size.

This small hut in the middle of a parking lot was once the wooded sanctuary of the 'Hermit of Montrose.'

A museum of unusual collections, mini-towns, and a half-dog, half-alligator.

An abandoned underground bunker not far from downtown New Orleans.

Before becoming a public park, this spot was a shell midden, a fort, and an amusement park.

Once defending the city of New Orleans from invasion by sea, this fort faces an uncertain future.

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

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

The crumbling remains of a 19th century fortess.

A forgotten sea village stands silent after hurricanes deemed it obsolete.

A medical facility that has been kept frozen in time.

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.