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

Limestone caves in the Cambodian countryside, once the site of genocide, now a place of peaceful beauty.

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

This Cambodian riverbed is covered in ancient Hindu carvings both above and below the waters.

A battle between nature and architecture in the Cambodian jungle.

These mysterious 1,000-year-old walls have revealed little about their past.

In this African village, the walls of the chief's compound are painted with beautiful traditional designs.

This subterranean town of over 50 dwellings lies thirty feet beneath the Earth's surface.

The ruins of an abandoned 17th-century fort that was almost completely destroyed by a fire.

The small cliffside monastery known as the Tiger's Nest is said to be the meditation site of an 8th-century Buddhist master.

This massive Maya archaeological site is home to the tallest man-made structure in Belize.

These enigmatic ruins continue to vex archaeologists.

A devastated ruin in the south of Belize where British explorers claimed to unearth the Mitchell-Hedges Crystal Skull.

An important Mayan religious and trading center dating back to 200 BC.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

This archaeological site boasts temple ruins that date back 5,000 years to the Dilmun culture, and may have been described in the tale of Gilgamesh's search for immortality.

The celebrity luchadores of La Paz are tough ladies in traditional petticoats and braids.

Mysterious Incan ruins on a tiny island in Lake Titicaca.

With its vast selection of books, comics, and records, this nearly 70-year-old open-air market always rewards the patient browser.

Stenciled handprints and wall paintings dating back 10,000 years, some of the earliest forms of cave art.

Kakadu National Park is known for its stunning beauty and its rock art, which represents the longest historical records of any continuous civilization on Earth.

Australia's first and only museum dedicated exclusively to bones.

This ancient rock shelter features cave art and is one of the most culturally important sites in the country.

Once an aquarium, this sanctuary now rescues sharks and rays from fishing nets.