Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

Villagers have recycled bomber fuel tanks from the Vietnam War and turned them into very, very strong boats.

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

Thousands of effigies of Buddha watch from caves set high above a legendary river, plus whiskey.

An ancient jungle temple carved into a rocky overhang of the Dane Soung Plateau.

Abandoned limestone cave was once a sacred place of worship.

Buried in the Laos jungle is a sanctuary for bears that would have otherwise been milked to death by poachers.

More than 200 statues filled with cryptic symbols give this park spot an aura of horror vacui fantasy.

Believed to have once stored either human remains or rice wine, thousands of mysterious stone jars lie in ruin.

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

Lonely minaret stump of a destroyed city.

Glacial lake that mysteriously empties itself every year.

A boulder carved into the shape of the cosmonaut's head.

Extremely isolated Silk Road caravanserai in the middle of nowhere.

A Stalinist prison camp for the wives and children of men accused of betraying the Soviet state is now a memorial museum.

An entertainment center in a huge transparent tent.

A modern tower, symbolizing the legend of a golden egg on top of the tree of life.

Nicknamed Kazakhstan's Grand Canyon, this natural wonder lies east of Almaty near the Chinese border.

Avenue of trees planted by cosmonauts before their space departures.

One of the most horrible legacies of the Cold War is a site where the Soviet Union tested nuclear bombs on civilians.

Mysterious spherical rocks in the semi-desert of western Kazakhstan.

The lovely lake that was naturally dammed, then naturally destroyed, then unnaturally saved.

An abandoned Soviet-era mining town in the mountains of South Kazakhstan.

Iconic pyramid from famed British architect Norman Foster designed to represent all of the world's religious faiths.