They squeal, they nosh, they look like predators.

Inhospitable caverns just beneath this island paradise offer insights into alien worlds.

Concentrated around the Dead Sea, these surprising canyons are filled with coursing water, fish, and even crabs.

A magical oasis in the middle of the Negev Desert.

A former hospital is now home to a pizza parlor and maybe a few ghosts.

Drive past the giant fruit sculptures and up to the window for a menu of fruity treats.

Some of the best Persian food in New York comes from the front window of an unassuming pizza shop.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

Established in the '60s, a family-owned tropical drink bar founded by Ray Buhen, bartender to the stars.

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

Where beautiful signs live on forever.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

Where America's first doomsday cult awaited the end of the world.

A look into the Church of Scientology's deeply unfavorable view of psychiatry.

A castle that was built stone by stone by an eccentric journalist.

Private collection of art inspired by cabinets of curiosity.

San Francisco's newly reopened hands-on science museum.

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

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

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

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

An underwater city for the dead.

This New Orleans tree is filled with hidden chimes that produce a carefully tuned melody.

This lab's maddening silence is good for business but bad for sanity.