Once the nail factory shut its doors, this Swedish factory town was abandoned, leaving behind a modern ghost town.

The original goat tower, the one that started it all.

A salty red wasteland in Tanzania is a breeding spot for endangered flamingos.

Walk in the footsteps of the gods and straddle two tectonic plates.

Medicinal spa created with the discharge from a geothermal energy plant.

An encyclopedic collection of mammal penises.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

One of the most remarkable caves in all of Iceland was created by a once raging river of lava.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

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

A trio of hidden hot tubs takes advantage of Iceland's natural geothermal vents.

A massive underwater sinkhole made famous by Jacques Cousteau.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

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

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

God's Saharan sandbox of wrath.

A fortified city, home to a remaining population of five families

A Moroccan getaway in the mountain range that plays the Himalayas' stunt double.

The world's largest ship graveyard is the product of decades of corruption.

A geological bull's-eye visible from outer space.

These strikingly barren, rolling red hills were caused by bad farming practices.

No one is exactly sure why over a hundred lakes have formed amongst the tallest sand dunes on Earth.

Climbing Iceland's highest peak on the rim of the Oræfajökull volcano.

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