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

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.

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

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

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

Two large posteriors in one giant statue.

Devastated landscape used for hundreds of years by the Romans as their primary mining site.

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

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

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

Single runway interrupted by a busy road that cuts across its middle.

The final resting place of the great navigator, or maybe his brother.

The corpse bride of Portugal.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

The world's oldest bookshop still in operation.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Stunning Roman aqueduct used for 1900 years and still standing.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Elaborate tile work in this railway station tells the story of Portugal.

You can cross from one country to another in a single hop on this little bridge.

A Spanish artist builds his own castle.