A landscape decorated with enormous skull sculptures.

Medieval ruins nestled within a breathtaking swath of Spanish nature.

These Bullet-scarred bunkers are haunting reminders of the Spanish Civil War.

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

This influential Renaissance-era library was once the haunt of kings and monks.

A breathtakingly steep set of stairs is carved directly into the face of the sea cliffs of Bonifacio.

According to tradition, King Phillip II supervised construction of the seat of his empire from this seat carved into rock.

Touching this little fossil embedded in the wall of a grand mosque-cathedral may make your wishes come true.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A micro-communist utopia in Spain with no police, no mortgages and full employment.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

This remote location of this Moorish stronghold means it doesn’t attract many tourists—and that it still has the aura of fear and bravery of the 1300s.

Moorish signal station on a stratgic rocky outcrop.

A reservation-only highland forest reserve of endangered Pinsapar firs stands above a village in Andalucía.

"Alleys of Stone" form natural mazes in Spanish natural park.

Geological storytelling.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Designed as a labyrinth, this subterranean prison was crafted without bars or doors.

This former community granary is now a lonely mountaintop shrine.

The world's largest concentrated solar power plant.

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

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