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

Famed architect Antoni Gaudi built this generous thank you gift to a friendly host who housed him during a job.

A darkly erotic open-air statuary in Catalonia.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

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

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

The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

An eccentric collection of antique items shares space with a prop-quality witchcraft museum.

Devastated landscape used for hundreds of years by the Romans as their primary mining site.

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

Blue-green pools and smooth stones comprise one of Spain’s most idyllic hidden wonders.

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

One of Antoni Gaudí's least-visited works, an homage to Catalan patrimony that mixes neo-Gothic with Modernista forms.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

Rare karst landscape eroded from a flat seabed.

Its appearance in "Game of Thrones" may spur on the long-awaited restoration of this medieval shipyard.

Numerous sculptures set along hiking trails symbolize and idealize the relationship between man and nature.

Cursed swimming pool left abandoned is now a favorite of filmmakers and ghost hunters.

A Romanesque tower appears when water levels drop.

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

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Abandoned Nazi train station turned underground astroparticle laboratory.

Of course Salvador Dalí lived in a castle...

The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”