Swim or sail to this pie-slinging boat off the coast of St. Thomas.

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

The closest thing to Mars on Earth.

The third-largest island in Canada is one of the remotest places on Earth.

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

Neither bomb blasts nor heartbeats escape the giant ears of this super sci-fi Arctic outpost.

Rare mummified forest could offers a glimpse into how our environment has been changed by humans.

A Cold War atomic camp buried under the ice is now emerging because of global warming.

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

This remote research station sits amid the second-largest ice sheet on the planet.

One of the last designs from architect Oscar Niemeyer.

Many cities have held the title, but Brazil snatched the crown from Chile in 2011.

The bookstore with bookshelves built into unlikely places.

A huge boat-shaped hotel with a blood red pool and other oddities.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

Five mile wide circular ring of rock in the Russian Far East is a curious geological oddity.

The coldest city in the world.

Siberian ghost town built by gulag prisoners.

Every New Year's Day, locals don gaudy costumes and dive into the frigid Firth of Forth.

This South Pacific volcano has been blowing its stack for over 800 years and is said to be home to a cult leader waiting to be reborn.

Underwater volcanic eruption forms new island off the coast of Tonga.

Museum of Fijian history, including its former tradition of cannibalism.

Final resting place of the most prolific Fijian cannibal of all time.

Two World War II aircraft lie within the jungle around this abandoned runway.