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

Geological storytelling.

This local emblem is the oldest and largest dragon tree in the Canary Islands.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

A network of hundreds of interconnected wineries in caves hides under the town center.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

A breathtaking and biodiverse wilderness in the mountain setting of Ernest Hemingway's "For Whom the Bell Tolls."

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

Giant topiary dog once played a role in a terrorist bomb plot.

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

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

This postmodern apartment block was designed to be a vertical neighborhood.

Catalonia Tradition: Beating the hollow Christmas log until it defecates in your fireplace.

A historic Christian shrine nestled within a spectacular natural cave.

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

Vibrant street art created with mixed media.

This embalmed man is one of the best preserved mummies from the Canary Islands.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

This small museum tucked within a subway station holds pieces from Madrid's past.

Giant granite sculptures representing family on the northern coast of Spain.

An early 20th-century bullring converted into a modern shopping center.

The oldest Roman lighthouse still in use.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.