Road signs in Namibia mark the location of one of the five major circles of latitude.

The ruins of this mining boom town stand like skeletal reminders of the settlement's dark history.

A rare cluster of alien-like plants grows along a dusty highway.

Bizarre living fossil only grows in a small chunk of the Namib Desert.

Far from the shore, this sandy victim of the Skeleton Coast looks like it was plopped in the middle of the desert.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

The remains of diamond fever taken over by the desert.

This cozy little museum is a journey through the history of Mongolia’s capital.

The monastery survived the Communist revolution in Mongolia as a religious museum.

Established hundreds of years ago, Gandan remains the premier Buddhist monastery in Ulaanbaatar.

An off-the-beaten-path monastery in the northern hills of Ulaanbaatar.

An exceptional assortment of fossils recovered from private collections.

A huge communist-era propaganda monument and mural that offers stunning views of the Mongolian capital.

Enormous statue of the Emperor of the Mongols.

This 18th-century tower is locally iconic.

The hellish conditions of this abandoned mine that snakes beneath the Pacific Ocean gave it its diabolic name.

You can swim in these highly salty, mesmerizingly blue lakes in the Atacama Desert.

The largest geyser field in the southern hemisphere is a spectacular sight.

In the most arid desert on the planet, the world's leading telescope allows astronomers to see more than has ever been seen before.

What was once a unique system of urban elevators is turning into a mechanical ruin.

The largest stone moai on Rapa Nui.

A nuclear power plant abandoned along with an international allegience.

This imposing memorial contains the remains of Che Guevara — and 29 other guerrillas who died with him in Bolivia.

A bronze sculpture of Lenin’s likeness outside Havana surrounded by 12 human figures in solidarity with the Bolshevik Revolution.