The extensive relics of an ancient Roman and Phoenician fish processing plant hide in a town park.

An outsider folly near Madrid.

These striking ruins of a castle resemble a ship's stern.

A bookstore dedicated to the intersection of comedy and art.

Saint Joseph was said to heal the deaf and blind, but it was a much smaller miracle that got him canonized.

Fascinating exhibits of prehistoric and ancient artifacts displayed with a uniquely modern touch.

During an annual Catholic feast in this tiny Spanish village, men dressed as devils leap over rows of babies to cleanse them of sin.

These magnificently sculpted tombs represent Spain's own legendary version of "Romeo and Juliet."

Abandoned tunnels dug for the once-thriving sea salt industry on the coast of southern Spain.

Despite its grandiose name, this enigmatic first-century void under the town is no cave, and it's possibly not a palace either.

This charming, medieval walled village is Spain's first "book town."

An ornate tower shows off a local artist's architectural flair.

An unusual but excellent display created in the 1930s as propaganda against the Freemasons.

Religious dwelling in a Spanish volcano.

Mysterious face-like images that appeared within an Andalusian house are surrounded by legends of the paranormal.

Strange masks and obscure costumes are housed in this old Madrid corrala.

Down this yellow brick road, visitors are treated to toadstool houses and massive mushroom sculptures.

An enchanting landscape of ancient sandstone structures eroded into otherworldly shapes.

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

This Arab fortress was once the largest citadel in Western Europe.

A neighborhood park in the city of Cáceres hides what some believe are revolutionary examples of Neanderthal cave art.

This chest hospital with a dark, haunted past serves as a fitting set for horror films and a paradise for ghost hunters.

Haunted tuberculosis hospital built by the patients.

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