A dreamy mausoleum honors Persia's most famous poet.

Modern-day cave dwellers carve elaborate homes out of volcanic debris.

17th century mosque for Shah Abbas' harem.

One of the largest and oldest caravansaries in Persia.

The fire inside this temple has burned for more than 1,500 years.

The hottest, driest, and most scenic desert on Earth.

These little castles each held thousands of pigeons.

The ancient necropolis houses the immense rock-cut tombs of four Persian kings.

Putrefaction plateaus in Iran, where the dead were sent for decontamination before going to their final resting place.

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.

The palace of the King of Kings, burned by Alexander the Great.

Iran's "Rose Garden Palace," built during 131 years of rule by Qajar kings, consists of 17 stunning structures.

A caravanserai turned into a museum showcasing the mastery of local carpenters.

Within the Dadès Gorge, amazing vistas and towering cliff faces can be seen at each new curve and bend in the road.

The world's largest concentrated solar power plant.

The designated Jewish quarter in Fez dates back to the 15th century.

Morocco’s modern capital was once a haven for Barbary pirates, who went so far as to establish a republic of their own.

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

The oldest known university in the world is in Fez, Morocco.

Crumbling necropolis set high above Fez.

The courtyard of this small Marinid madrasa is a dazzling example of intricate Islamic architecture.

The largest cactus farm in Africa.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.