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

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

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

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

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

This ancient Spanish castle sits high upon a hilltop.

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

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

The oldest Roman lighthouse still in use.

Just like in Hollywood, Madrid has also a forgotten walk of fame.

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

For one day every month Barcelona's Estació de França transforms into a market for model trains.

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

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

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

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

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

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

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

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

An exact replica of a colossal Olmec head sits atop a pyramid within a Madrid traffic circle.

Abandoned Nazi train station turned underground astroparticle laboratory.

Moorish signal station on a stratgic rocky outcrop.