An alien landscape of chalk-rock in the Egyptian desert.

The largest prehistoric ruins south of the Sahara, once a powerful center of international trade.

A South African bar inside a hollowed out 6,000-year-old Baobab.

Hidden in the hills is a mysterious stone structure, known only to a few.

A 10 million-ton rock once worshiped by the Tahamies Indians, accessed by an astounding staircase.

Former drug lord’s manor, now a theme park. Watch out for the hippos.

Enchanting cave with a river crashing through the roof.

An explosion of natural color known as "the river that ran away from paradise."

Unparalleled stargazing, one of Colombia's best observatories, and a swimming pool can all be found in the middle of this ancient tropical forest.

This picturesque mansion has gone from opulent ruin to nature museum.

These mysterious circular formations are actually remnants of 19th century gristmills.

According to legend, this boat-shaped henge is built over the grave of a mythic king.

Rocks carved with biblical passages in the 1800s.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

A town church once nearly submerged by the damming of a river is now hauntingly visible as the water recedes.

Giant kites are flown during this Day of the Dead celebration in Guatemala.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

An enormous, 30-story-deep hole in the middle of Guatemala City.

The mummified remains of Dashi-Dorzho Itigilov, Russia's most important Buddhist.

This massive glowering Lenin head gazes out over eastern Siberia.

The world's second-largest excavated hole.

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

A military museum, art park, mausoleum, and architectural oddity all on one fascist's estate.

This winding road through an Italian canyon may be the most scenic drive in the world.