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

These homes carved into the mountains seem to defy the laws of nature.

At Ghana's largest wildlife refuge you feel like you're right in the animals' backyard.

Perhaps the tiniest sculpture in Saint Petersburg is a little bronze finch inspired by a song.

Hidden in a metro shop under a shopping mall, this small museum tells the story of one of the world's largest urban transit systems.

A sculpture park of the tossed aside relics of the USSR, from Stalin to a massive Soviet emblem.

Dr. Strangelove-esque tours reveal the inside a bunker once reserved for Stalin himself.

This collection of reclaimed landmines acts as both an exhibition of their deadly history and as a shelter for children affected by them.

Hoax, mistake, or evidence of dinosaurs in human times?

A battle between nature and architecture in the Cambodian jungle.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

Two thousand feline artifacts fill Malaysia's "Cat City."

People have been scribbling on this massive chunk of granite for more than 1,500 years.

The oldest Buddhist monastery in Mongolia has survived centuries of invasions, political shifts, and religious purges.

The world's second-largest sundial, made entirely out of stone.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

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

Once an indicator of social class, the color blue has come to define this city on the edge of the Thar Desert.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

A six-ton wedding present for the King of the Scots.

Protecting the dead from opportunistic body snatchers.

A sweet symbol marks the place where torturous executions were once carried out.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.