An Italian geologic wonder that served as the inspiration for the landscape of Dante's hell.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

The final resting place of the great navigator, or maybe his brother.

Spain's largest bullring offers a unique glimpse at architecture and history.

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

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

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

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

This former royal palace with gorgeous gardens became the first museum in Morocco.

Crumbling necropolis set high above Fez.

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

Traditional 11th-century outdoor tannery.

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

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

God's Saharan sandbox of wrath.

One of the most spectacular canyons in the world.

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

The site of the first medieval crusade that pitted Christians against Christians.

French commune at the heart of conspiracies.

This ancient theater was once the home of fierce gladiatorial battles.

Historic medieval fortified city in southwest France.

One of the largest ochre quarries in the world, hidden in a limestone landscape.

From Carthage's Hannibal to riders of the Tour de France, many have crossed this scenic route through the Alps.

This one-of-a-kind archeological site is home to strange prehistoric ruins, the original use of which is still a mystery.