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

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

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

Within the Saudi Arabian desert lies a 2,000-year-old ghost town made of stone and mud.

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.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

This modest plaza in Moneygall, Ireland has cashed in on its distant connection to the U.S. president.

You can cross from one country to another in a single hop on this little bridge.

Celebrated as a center of civilization, the remains of the ancient city have been nearly destroyed by greed, egoism, and war.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

Kentucky's anomalous peninsula projecting into the Mississippi River, site of legendary earthquakes and local feuds.

A battle between nature and architecture in the Cambodian jungle.

Ferdinand Magellan dubbed the world's largest water village the "Venice of the East."

Charnel house at the foot of Mount Sinai.

This massive monument towers over the city as a constant reminder of the lives lost during Algeria's hard-won war for independence.

Classical ruins that remember ancient Rome's presence in Africa.

This dizzying span over the ancient Algerian city was once the highest suspension bridge in the world.

An extraordinary mix of Phoenician, Roman, early Christian, and Byzantine ruins beautifully set overlooking the Mediterranean.

The original resting place of Queen Cleopatra and Mark Antony's only daughter.

A seven-ton black granite monument dedicated to the memory of those who died and those who lived through the 1977 crash of the popular Southern rock band.

The largest known Ancient Egyptian obelisk.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

This peculiar lake of pitch is so thick and viscous that one can walk on its surface.