The restaurant keeps a hidden séance room on the second floor and reserves a table for the spirit of the former owner each night.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

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

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

These eerie outliers of the lightning bug family glow a mysterious blue color.

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

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

The largest self-built castle in the U.S., six decades in the making.

The world's longest known cave system.

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

This little museum is built on a theater that was once a wildly elaborate speakeasy.

An underwater city for the dead.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

A museum befitting the city responsible for supplying the majority of the world's LSD.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Home of an evil witch famous within southern folklore.

A technicolor place of worship for Elevationists.

A semi-scholarly approach to sex.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.