The most powerful laboratory radiation source in the world pulses with 1,000 times the electricity of a lightning bolt.

A 6,888-carat piece of turquoise that bears a striking resemblance to the first President of the United States.

The U.S. Air Force has an anti-satellite laser weapon.

These hellish-looking cliffs in the Canadian Arctic have been burning for centuries.

The Arctic Archipelago is home to world's largest third order island: an island in a lake on an island in a lake on an island.

The remote graves mark the mysterious deaths of four 19th century explorers.

The closest thing to Mars on Earth.

A long-disputed island that Denmark and Canada claim by periodically alternating flags and bottles of liquor.

The world's northernmost flowers cling tenuously to life on desolate Kaffeklubben Island.

This isolated structure beckons adventurers with sublime views of the Faroe Islands.

Located more than 600 feet beneath sea level, this tunnel boasts the world's first undersea roundabout.

This mysterious, medieval cathedral remains unbuilt but fiercely protected.

The narrow passages will challenge even the bravest driver.

This isolated island is often capped by its own fluffy cloud.

A stratovolcano located in the south of Iceland, with a long history of charted activity and a rich mythology attached.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

Pick up this rock and become an instant legend.

Travel deep inside of Europe's second largest glacier in the world's largest man-made ice cave.

This fairytale-like structure is the last turf church ever constructed in Iceland.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.

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

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

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