In this historic region, homes and churches are carved into ancient volcanic rock formations.

Northern Ireland's Brobdingnagian stepping stones.

Rusting ships sit in a desert where a sea used to be.

This derelict superstructure was a very important warning system for the Soviet military.

This attraction was abandoned after the Chernobyl disaster.

Secret Soviet city once home to Russian cosmonauts and space training facilities.

World's oldest and largest space launch facility, once a secret missile testing site.

Former island in the Aral Sea used to be a top-secret Russian bio-weapons facility.

Where giant ships go to die.

Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

Once the most densely populated place in the world, this island is now a ghost town.

Centuries-old bridges grown from tangled roots.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

The most alien-looking place on Earth.

This impressive clifftop temple was once at the center of an international custody dispute.

The world's largest reclining Buddha, the Giant Buddha of Mudon.

One of China's last communal villages wears its ideals on its sleeve.

350-foot-high emperor faces in China's Yellow River valley.

The largest statue in the world towers at 420 feet high atop another 66 feet of pedestal.

A precariously perched golden rock defies gravity and brings pilgrims from across Myanmar.

This complex of vertically-excavated Buddhist, Jain, and Hindu monolithic temples in India's Maharashtra providence illustrates a spirit of tolerance characteristic of ancient India.

This famous city eluded concrete detection until the early 2000's.