Mine shafts and hard pastries await visitors at this massive mountain of salt.

An eerie collection of the surviving structures from a past celebration of the future.

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

A site where “the ravages of the war are more striking…than any other place in contemporary Spain.”

Moorish signal station on a stratgic rocky outcrop.

This line of 12 tower mills described in the story of Don Quixote is among the most iconic landscapes in Spain.

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

Abandoned Nazi train station turned underground astroparticle laboratory.

Rare karst landscape eroded from a flat seabed.

A Romanesque tower appears when water levels drop.

A subterranean relic of the Spanish Civil War hides below this picturesque park.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

This enchanting natural park is a magical example of a temperate rainforest in Europe.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

Volcanic rocks ground down into sand make this Spanish beach as black as night.

Cliffside houses provide a spectacular view from their perch above the valley.

An open-air "garden" of mural art that changes weekly.

Mysterious Spanish catacombs of unknown origins.

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

Of course Salvador Dalí lived in a castle...

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

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

This magical space partly designed by Antoni Gaudi is one of the best examples of romantic gardening in the Mediterranean.

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