Spain's stunning solar energy plant.

A model solar system adds a celestial touch to this suburban park.

An archeological treasure trove stumbled upon by a couple of children.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

A magnificent place to see authentic paleolithic cave paintings that are an astounding 33,000 years old.

Giant topiary dog once played a role in a terrorist bomb plot.

Part of the medieval watchtower is displayed in an otherwise ordinary parking garage.

A Spanish artist builds his own castle.

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

A beautiful little museum hidden away in the heart of Barcelona holds a treasure trove of Ancient Egyptian artifacts

This species of wild goat stars in witchy legends and frolics among the park's eerie rock formations.

An out-of-place grove of sequoias thrives in northern Spain.

Thanks to an acoustic anomaly, this unassuming stone bench has heard one hundred years of secrets.

A historic Christian shrine nestled within a spectacular natural cave.

On La Gomera, "Silbadors" communicate in a 4,000-word language of whistles.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

Vibrant street art created with mixed media.

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.

This century-old ruined temple was reborn as "The Church of Skate."

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

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

This religious complex carved into a cliff is steeped in legends of miraculous stags and the Holy Grail.

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