Centuries-old bridges grown from tangled roots.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

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

The oldest monument in Marrakesh and the city's only surviving example of Almoravid architecture.

Exploring the wilder, more passionate sibling of Erg Chebbi feels like discovering a secret sun-kissed planet from another galaxy.

An eerie former warehouse turned cistern turned movie set.

A mud brick kasbah with a history of lavishness and traitorship.

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

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.

Crumbling necropolis set high above Fez.

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

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

The other side is actually green.

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

The remains of a magnificent medieval fortress that was the capital of a vast empire.

One of the most spectacular canyons in the world.

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

Some claim these desert ruins are from the legendary "Atlantis of the Sands."

Travel deep inside of Europe's second largest glacier in the world's largest man-made ice cave.

The bright red stripes streaking across the rocks are the star feature at this Icelandic waterfall.

Surrounded by ash fields in Iceland, an impossibly verdant valley looks like something out of a fairytale.

An isolated, rusty phone booth commemorates Iceland's first international telegraph cable.