At this faithfully preserved medina off the Moroccan tourist circuit you can walk through six centuries of history in one day.

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

Traditional 11th-century outdoor tannery.

The true depths of these stunning Moroccan caves are unknown.

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

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

God's Saharan sandbox of wrath.

Crumbling necropolis set high above Fez.

The other side is actually green.

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

Mosaics, storks, and brothels—this ancient city has it all.

A fortified city, home to a remaining population of five families

One of the most spectacular canyons in the world.

A Moroccan getaway in the mountain range that plays the Himalayas' stunt double.

Founded as a refugee camp, now a popular tourist spot.

The world's largest ship graveyard is the product of decades of corruption.

Five ancient libraries, little changed for centuries, preserve a medieval archive of Quranic lore and civic documents

The last remaining site of Yoruba worship of the fertility goddess.

This ancient burial site is believed to be one of the first earthquake-protected structures in the world.

17th century mosque for Shah Abbas' harem.

This ruined fortress was the stronghold for a persecuted medieval leader and his infamous Assassins.

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

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

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.