Originally a meeting place for foreign correspondents and war reporters, the FCC remains an atmospheric spot for sunset drinks in Phnom Penh.

Khmer Rouge's high security prison.

5,000 skulls in memorial to those killed by the Khmer Rouge.

A boat ride through utter darkness, lit only by headlamps, reveals an emerald green pool locals believe is sacred.

In the world's most bombed country relative to its size, this incredible organization helps pick up the pieces.

Bizarre Hindu and Buddhist sculpture park.

This tiered waterfall is so pretty it may cause visitors to cry tears of their own.

Six times a day a train runs right through the middle of this Thai street market, sending vendors scrambling.

Built entirely of interlocking pieces, construction of this Chinese Muslim house of worship required zero nails.

The oldest (maybe) swimming pool in Iceland is a stunning oasis built into the side of a lush hill.

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

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

The largest whale museum in Europe allows visitors to walk among life-size giants.

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

Standing proud atop a Turkish bluff, this Ottoman palace has retained its grandeur despite being abandoned for centuries.

Hundreds of caves filled with thousands of centuries-old statues and murals.

Three columns of volcanic rock shoot out of the ocean.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

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

The palace of the King of Kings, burned by Alexander the Great.

Hidden just under the waters around this Turkish island are the ruins of a once great city.

A dead saint, a deadly poison, and a mysterious holy ooze.

The sunlight passing through the opening of this huge cave system creates a magical effect.

People have been living in the cave houses on this Italian hillside since the Neolithic era.