Eccentric sculpture garden brings Basque mythology to life.

A house covered entirely with shells.

This Bronze Age man spent millennia buried in a mine, giving his bones an eerie hue.

A statue commemorating a beloved stray dog who was adopted by the entire neighborhood where he lived.

The current seat of the Parliament of Andalusia was once the epicenter of the Great Plague of Seville.

An unexpected ghost village lurks on the southeast coast of Tenerife.

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

Spain's stunning solar energy plant.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

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

An architect transformed this abandoned cement factory into his castle-like workshop.

Bacteria and algae give the salty water its bubblegum hue.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

This semi-secret storybook hedge maze is also the oldest garden in the city.

A beautiful but toxic fountain of mercury.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.