For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

The ruins of a 2,000-year-old Roman fishing village perched on one of the best beaches in Spain.

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

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

The Roman city was the birthplace of various emperors and is home to one of the empire's most impressive architectural feats.

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

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

The ruins of an ancient stadium that hosted gripping chariot and horse races.

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

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

Catalonia Tradition: Beating the hollow Christmas log until it defecates in your fireplace.

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

Spain's stunning solar energy plant.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

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

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

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

The oldest Roman lighthouse still in use.

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

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

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

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

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