This colorful statue welcomes visitors to a Barcelona park.

This influential Renaissance-era library was once the haunt of kings and monks.

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

An early 20th-century bullring converted into a modern shopping center.

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

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

A complimentary beverage is offered to the bodega's resident rodents every day.

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

A network of hundreds of interconnected wineries in caves hides under the town center.

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

A Romanesque tower appears when water levels drop.

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

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

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

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

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.

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

Of course Salvador Dalí lived in a castle...

Stunning Roman aqueduct used for 1900 years and still standing.

A Franco-era dam flooded (almost) everyone out of this centuries-old Aragonese town.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

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

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

A lush indoor jungle fills this bustling Madrid transportation hub.