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

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

More than 100 monumental tombs carved into rock are preserved at this ancient Nabataean site in the Arabian Desert.

An unfinished tomb carved into a giant boulder in the Arabian Desert.

Carved into a towering rock mountain in Al Ula, this once served as a religious and political center in Hegra.

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

An archaeological site believed to be the burial place of the "mother of us all."

A non-profit that uses the impressive smelling abilities of African Pouched Rats to find and clear unexploded land mines.

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.

Three floors above a 2,000-year-old royal tomb is a rare collection of ancient porcelain pillows.

A biblically accurate ark located beneath a Hong Kong bridge is fun for the whole Christian family.

These pastel-colored homes were built when the island of Macau was a Portuguese colony.

These towering cliffs jut dramatically from the middle of a barren desert.

A 19th-century fortress and collection of artifacts offer a tour of Saudi history.

No building in the world leans as far as the so-called “Leaning Tower of Abu Dhabi.”

Whitewashed mosque contains the world's largest carpet.

The shallow, salty inlet was a safe haven for 19th-century pirates.

Qatar's oldest market can trace its origins back more than a century.

A swan-like monument on Obad's Hill honors those that defended the area from German invaders during WWII.

A curious cave church carved into the face of a cliff.

A scattered cemetery of medieval tombstones, each carved with indivdual patterns and scenes, overlooking a bright blue lake.

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

One of the world's tallest flagpoles.

Hang out with thousands of butterflies in one of the world's largest such enclosures.