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

Crumbling necropolis set high above Fez.

Traditional 11th-century outdoor tannery.

Morocco's Argania trees are infested with nut-hungry goats.

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

The other side is actually green.

God's Saharan sandbox of wrath.

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

One of the most spectacular canyons in the world.

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

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

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

Ancient snack bar of the Roman Empire re-opened.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Erotic art covers the walls of the largest ancient pleasure palace.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

Hoodoos, naturally eroded land formations, stand 20 feet tall in the Canadian badlands.

Fossils, railroads, and waterfalls!

Few other hotels can rival the grandeur of the Castle in the Rockies.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

A pixel art killer whale is frozen mid-leap in this Vancouver square.