An encyclopedic collection of mammal penises.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

Rising from the sea like a stone monster.

Staves, storm-calling, and of course, necropants.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

This eccentric cave dwelling is bizarre even by the standards of a subterranean town.

You'll find the little birds tucked within the rocks of this Australian beach.

Alien rock formations grown from the sands of an Australian national park.

Australian museum dedicated to human health and lack thereof.

An opal mining town in the middle of Australia where people live, worship, and shop underground.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

A naturally beautiful, seemingly bottomless deep blue spring.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

1% of Greenland's entire population used to live in this single building, which is now slated for demolition.

Thousands of letters to Santa get delivered to this mailbox in Greenland.

Greenland's first shopping mall also hosts the country's government.

Small Island off the coast of Greenland.

These eight mummies are the best-preserved human remains ever discovered in North America.