This sanctuary is home to donkeys who finally get to rest after a life of toil.

God's Saharan sandbox of wrath.

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

This amazing oasis of art and plants is hidden on the outskirts of Marrakesh.

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

Along the most northwestern point in Africa is an ancient cave surrounded by legends.

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

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

The other side is actually green.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

An Italian vineyard invites religious pilgrims to stop by 24/7 to get their drink on, for free.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

Romans built the world's tallest artificial waterfall in 271 BC.

On rare days, this abandoned castle's gatekeepers open its doors, revealing the eye-popping splendor hidden inside.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The land is home to swimming ponies and a legendary 18th-century treasure.