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

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

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

Village situated on a narrow volcanic escarpment.

This Navarrese cave's history of witchcraft and pagan ritual is not just embraced, but recreated each year.

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

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

Mountain where Jesus was first tempted by the Devil.

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

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

This cemetery features modernist statues as strange as its name.

A beautiful but toxic fountain of mercury.

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

At the foot of a waterfall lies a peaceful swimming lagoon and evidence of over 60,000 years of human habitation.

Eccentric sculpture garden brings Basque mythology to life.

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