A curious memento mori hangs in the magnificent Cathedral of Segovia.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

This line of 12 tower mills described in the story of Don Quixote is among the most iconic landscapes in Spain.

An abandoned airport in the middle of nowhere.

A series of colorful murals breathes new life into old grain silos in Spain.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

This abandoned, turn-of-the-century astronomy hub is now the subject of more photographs than it ever took.

Touching this little fossil embedded in the wall of a grand mosque-cathedral may make your wishes come true.

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

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

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

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

A micro-communist utopia in Spain with no police, no mortgages and full employment.

Sample Spanish wines under frescoes in a historic monastery of "barefoot old men."

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

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

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

The ruins of a 2,000-year-old Roman fishing village perched on one of the best beaches in Spain.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

A 16th-century Andalusian palace.

The world's largest wooden structure.

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

Spain's stunning solar energy plant.