This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

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

This species of wild goat stars in witchy legends and frolics among the park's eerie rock formations.

A magnificent, long-abandoned castle built in the wake of the reconquest of Spain.

Houses are tucked between, on, and underneath giant boulders.

Mysterious Spanish catacombs of unknown origins.

This architectural beauty is the home to a personal collection of more than 600 examples of mechanical musical instruments.

The world's first electric battery-powered submarine.

An impressive display of ships and artifacts from the ancient Mediterranean maritime trade.

A display of torture devices used in the Spanish Inquisition and other scourges of medieval Europe.

Abandoned tunnels dug for the once-thriving sea salt industry on the coast of southern Spain.

An enchanting landscape of ancient sandstone structures eroded into otherworldly shapes.

This restored 17th century synagogue is one of the few remaining structures in Morocco’s ruined Jewish quarters.

The designated Jewish quarter in Fez dates back to the 15th century.

Fragments of human bones are embedded in the walls of this quaint alley.

The largest medieval water tank on the Iberian Peninsula is preserved beneath the Cáceres Museum.

You can cross from one country to another in a single hop on this little bridge.

A five-square-mile slice of Spain on the Mediterranean coast of North Africa.

This star-shaped military outpost is now simply trying to protect itself from neglect.

An abandoned mine now resembles a post-apocalyptic landscape of derelict buildings and blood-red pools of water.

Dead weights honor the dead of Portugal's fishing industry.

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

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

This abandoned, turn-of-the-century astronomy hub is now the subject of more photographs than it ever took.