This 15th-century aqueduct with distinctive pointed arches was used for irrigation in the Vinalopó valley.

This magnificent market stands as a poignant symbol of the suffering caused by the Spanish Civil War.

This stop on the Camino de Santiago stands high above the underwater ruins of a medieval town.

Indigenous cultures believed all life would end if this enormous rock toppled.

Marvel at this massive waterspout fueled by the incoming tide.

Replica of Seville, Spains famous Giralda, a former minaret converted into a bell tower.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

The two massive guns that defended Cartagena Bay.

This multi-level, aqueduct-footbridge hybrid is one of the greatest works of the Spanish Renaissance.

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

This Canary island is a quintessential example of nature’s beauty, and its unbridled fury.

Two large eyes painted anonymously on a mountain overlooking the city pay homage to an old legend.

You can soak in three relaxing pools filled daily by the tide.

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

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

A daily pyrotechnic celebration marks a beloved tradition during Valencia's festival season.

Stormy conditions send jets of seawater bursting through holes in the cliffs.

"Satisfying" is a good way to describe these beautifully aligned rows of Spanish mills.

Hundreds of caves once used to store grains and animal feed.

Hidden well off the beaten path in Catalonia is this crumbling medieval castle that is slowly being covered in graffiti.

An arresting arch punched straight through a mountain provides one of the most scenic spots, and challenging climbs, on the planet.

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

This mountaintop observatory is home to one of the world's largest reflective telescopes.

The hidden ruins of an old hydroelectric plant reclaimed by nature.