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

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

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

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

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

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

One of the largest ossuaries in Spain is packed from floor to ceiling with bones.

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

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

The sister plane of the C-123 shot down during the Iran-Contra Affair has found a new purpose in retirement.

This castle-fortress is a living example of the transition from medieval defenses to modern fortifications.

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

Wonderland replication in progress by one persistent man.

Village situated on a narrow volcanic escarpment.

Now a pile of ruins and rubble, this was a lovely mountain town as recently as 1960.

This ancient Spanish castle sits high upon a hilltop.

A Romanesque tower appears when water levels drop.

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

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

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

Mountain where Jesus was first tempted by the Devil.

This Funeral Hearse Museum represents the finest in cadaver transportation.

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