Japan's corrupt-mental-institution themed restaurant offers diners a chance to eat inside of filthy cells.

A subterranean shelter remains intact under a busy Paris railway station.

The giant Siberian crater known locally as the "doorway to the underworld" is expanding every year.

This network of tunnels housed an entire village for years, and even had a hall for screening movies.

A Himalayan monastery claims to have a piece of a centuries-old abominable snowman.

An elegant chandelier hangs over this ancient sewer chamber, now open for concerts and public tours.

A retrofuturistic art installation in the Pittsburgh Airport.

A 70-foot-deep ice cave formed by lava from Mt. Fuji on the edge of Japan's "Suicide Forest." 

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

A Japanese concept restaurant that feels like a party thrown by the monsters in your closet.

Handsomely crafted representations of our round planet.

Fonts are born and bred here at the oldest letterpress type foundry in the United States.

The venerated body of a 12th century saint is celebrated each year with the 'Race of the Candles.'

A century-old network of freight tunnels underneath the city's historic business district.

Immortal combat in a Moscow museum.

The remains of a deserted 1800s farming community can be found in Little River State Park.

This little museum has an exhibit devoted to the elusive forest denizens.

This quirky roadside attraction dives into the many theories surrounding North America's most infamous hairy cryptid.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

This shop and studio is dedicated to the art of the book, from letterpress to bookbinding.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

In this century-old literary safehouse, print is alive and well.

Tiki luxury on Nob Hill.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.