Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.

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

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

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

An abandoned horror film set sits eerily along a highway through Hollywood's "door to the desert."

The other side is actually green.

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

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

One of the most spectacular canyons in the world.

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

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

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

The quaint gallery displays works by artists from all across Mauritania.

Thousands of colorful pirogues showcase ingenious craftsmanship at the largest fishermen port in Nouakchott.

Climb atop one of the world's longest and heaviest trains for an unbelievable journey across the Sahara Desert.

This bright green structure is the final resting place of the 16th-century leader responsible for building the walls around Harar.

Rusting railcars and locomotive equipment fill this Ethiopian train graveyard.

The medieval center of the Islamic world was also once the seat of Saladin's sultanate.

Slum Settlement Filled With Mountains of Garbage.

Standing atop 2nd-century Roman ruins, this church is one of the oldest and most iconic in Old Cairo.

A network of ancient Egyptian tombs built into the cliff face along the Nile.

The largest known Ancient Egyptian obelisk.

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

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.