One of Western Africa's oldest mosques, this Timbuktu icon has stood for nearly 700 years.

The most important and best preserved remnant of West Africa's powerful Songhai Empire.

Ancient Manuscripts showcase the civilization of West Africans during the Middle Ages.

These homes carved into the mountains seem to defy the laws of nature.

The central mosque of this Mali town is entirely built from mud.

One of the best-preserved impact craters on the planet is located in the middle of the Sahara Desert.

A century-old stone hermitage overlooks this remote pass in the Hoggar mountains, surrounded by a landscape of eroded volcanic cores.

Classical ruins that remember ancient Rome's presence in Africa.

The abstract sandstone rock formations at this Algerian national park are rich with prehistoric art.

This dizzying span over the ancient Algerian city was once the highest suspension bridge in the world.

An extraordinary mix of Phoenician, Roman, early Christian, and Byzantine ruins beautifully set overlooking the Mediterranean.

The original resting place of Queen Cleopatra and Mark Antony's only daughter.

This tiny river island switches sovereignty every six months as part of a rare, centuries-old agreement.

This Navarrese cave's history of witchcraft and pagan ritual is not just embraced, but recreated each year.

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

A site where “the ravages of the war are more striking…than any other place in contemporary Spain.”

The quirky - and private - constructions of a secluded artist depict the house of God.

Super Robot anime statue guards a forgotten suburban development in Tarragona.

A signal indicates the entrance to this alley, rumored to be a meeting place for witches.

Archaeological site of Iberian people ruins.

A whimsical garden of outsider art in the Spanish countryside.

A botanical garden full of thought-provoking contemporary sculptures.

At least according to the Guinness World Records.

Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.