One person's lost luggage is another person's treasure.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

New York City's smallest piece of private property.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

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

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

Left untouched since a double murder-suicide in the 1960s, Los Feliz murder mansion remains a neighborhood mystery.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

Home to items never before seen by the public.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

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

A semi-scholarly approach to sex.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

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

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."