A fiery crater has been burning in the Karakum Desert since 1971.

This massive piece of aviation history calls this residential neighborhood home.

This extremely remote border crossing was closed to prevent smuggling and looting.

A collection of old steam and diesel locomotives sitting in a fenced-off garden.

These ancient pecked images are among the oldest and best-preserved in Mongolia.

Hidden treasures belonging to Mongolia's most revered and multi-talented monk spent decades buried in the Gobi desert.

A nondescript dirt lot hides an intriguing center of shamanic healing.

Thousands of artifacts tell Mongolia's military history, from the Bronze Age to the present.

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

A jagged silhouette of shamanistic stone heaps rises from the shore of this dazzling mile-high lake.

Dinosaur eggs were first discovered at these fiery red cliffs.

An institution dedicated to curiosity, logic, riddles, and Mongolia's long history of puzzles.

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

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

Enormous statue of the Emperor of the Mongols.

The grassy landscape is home to the world's last truly wild horses.

This uncanny fresco celebrating the "triumph of death" was split into four pieces to be moved to another museum.

A study of Fascist era Art Deco design in Italy.

This triumphal 16th-century arched gateway leads to the oldest street in Palermo.

Haunting graffiti left by prisoners of the Spanish Inquisition.

Thousands of well-dressed mummies below a monastery.

For centuries, Jeddah’s old town was a major trading port and a point of entry for Hajj pilgrims traveling by sea.

The rocks around this mountain are filled with so many carvings that the area became known as the "open library."

Lions carved into the rockface adorn these two tombs built into the mountains of Dadan.