This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

These ominous lava formations were said to be an entrance to the netherworld so of course they inspired a famous metal band.

The Icelandic Sea Monster Museum explores the area's history of aquatic cryptid sightings.

Over 3km of caverns and caves at the Switzerland-France border contain the largest underground river in Central Europe.

In Namibia there is an installation that explores the intertwined linguistics and existential beliefs of an imaginary community.

Unexplained bald patches in the landscape grow and recede over time, as though they are somehow alive.

Sacred Buddhist home of some spiritual monkeys.

Named after the Goddess of Harvests, Annapurna is the deadliest member of the Eight-thousanders club.

The abandoned hospital whose elaborate ghost stories cover up the dirty truth - an uneventful sanitation issue and other mundane reasons for its demise.

Plenty of old carney magic still haunts this photogenic amusement park.

The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

Brazil's only museum dedicated to the art and evolution of tattoos.

At 705 feet high, Brazil's "House of Stone" is the largest cave mouth in the world.

Try not to get lost in this picturesque Brazilian labyrinth of the dead.

Off-limits and full of venomous pit vipers, Brazil’s Snake Island has a frighteningly apt nickname.

Eduardo Kobra’s breathtaking 32,300-square-foot graffiti wall took over Rio’s Olympic Boulevard.

The bookstore with bookshelves built into unlikely places.

The crypts are so large they're basically their own underground church.

The rusty hull of this 1899 ship serves as a tribute to explorers of the bottom of the world.

A fantastical and futuristic temple of light built from nine monumental glass veils.

Shrine to Japanese water-goblins, complete with their preserved body parts.

This neighborhood thoroughfare is haunted by dozens of homemade monsters.

In addition to fine dairy products, the world's most beautiful milk shop also offers a feast for the eyes.

Berlin's oldest surviving academic architecture hosted decades of animal dissections.