An abandoned castle owned and ignored by Masons carries a cursed history.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

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

An abandoned stretch of highway, deteriorating next to the operational one.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Rustic natural hot springs in the deciduous rain forest.

The "Seinfeld" diner.

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

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

Quite simply the largest tree in the world (by volume).

The largest earthwork effigy in the world.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

New York City's smallest piece of private property.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

Make your reservation to have coffee with some kitties.

An acoustic anomaly with a mysterious cause.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

The angel of death appears to weep black tears at this grave marker.

All that's left of the quintessential "cabin in the woods."

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.