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

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

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

The world's largest wooden structure.

A 16th-century Andalusian palace.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

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

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

One of the oldest libraries in the world is still operating and contains the oldest existing document in the Italian language.

A gorgeous example of 13th-century Gothic architecture.

These elaborate gothic monuments honor Verona's medieval lords.

A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

This medieval castle was reconstructed by Carlo Scarpa.