This 47-story "M" needed 20 years to be completed

An homage to the first Spanish cyclist to win the Tour de France.

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.

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

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

Turntable anonymously received orphans, alms, and groceries.

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

A stately palace has been converted into the world's largest cannabis museum.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

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

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

A hidden medieval crypt where a famous legend says the devil used to teach black magic.

An eerie collection of the surviving structures from a past celebration of the future.

The facade of this 16th-century building is decorated with carvings of 300 seashells.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

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

This abandoned mansion has a window for every day of the year, and is a temple for ghost hunters.

A New York–based physician returned home to Spain to build his own elaborate monument to Christopher Columbus.

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

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

Dead weights honor the dead of Portugal's fishing industry.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.