An Antoni Gaudí masterpiece in Astorga.

The facade of this 16th-century building is decorated with carvings of 300 seashells.

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

This postmodern apartment block was designed to be a vertical neighborhood.

A towering monument in Spain has proven to be more labor-intensive than initially planned.

An ancient Egyptian temple in the middle of Madrid, Spain.

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

Artist Natividad Sánchez wrote a new ending for one of Roman mythology's tragic love stories.

This embalmed man is one of the best preserved mummies from the Canary Islands.

An iconic and controversial ancient Iberian funerary urn with a hauntingly penetrating gaze.

A reproduction of the famous prehistoric cave paintings is hidden underground at the National Archaeological Museum.

A vault of safe-deposit boxes in an old bank has been repurposed as a time capsule of Hispanic culture.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Commonly acknowledged as the only public monument to the Devil himself.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

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

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

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

This abandoned viewing platform has become a monument to unnecessary government spending.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

A curious fountain that resembles a beloved character from the 1960s.

Once used to calculate the various levels around the country.

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