This hunter-gatherer architecture is believed to be the oldest religious complex known.

A sacred lake with thousands of sacred carp and a biblical history.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

The alleged house of the Virgin Mary is tucked away in a park and nature preserve on Mt. Koressos in Turkey and is holy to both Catholics and Muslims alike.

This crumbling medieval basilica once attracted pilgrims by the thousands to collect a miraculous dust that formed above the saint's tomb.

The ancient latrines of the Greeks, in all their public glory.

Roman ruins top white travertine terraces formed by ancient hot springs.

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

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

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

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

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

Known as the "Valley of the Moon," this Jordanian wadi is one of the most amazing desertscapes on Earth.

Charnel house at the foot of Mount Sinai.

In Egypt's expanding metro area, many of the neighbors are dead.

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

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

This former cathedral is now a bustling library packed with students and pigeons.

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

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

An ever-evolving wall of graffiti art off East Liberty Street.

The city is full of whimsical portals to another world.

Trade in that pesky human soul for cold-hard circuits.

Everyone's invited to put on a miniature concert with this world-class musical wonder.