These "mermaids" that surround a plaza in Segovia are rather sphinx-like.

This multi-level, aqueduct-footbridge hybrid is one of the greatest works of the Spanish Renaissance.

Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.

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

This Roman arena once played host to bloody gladiatorial battles.

Long tunnels run under the ancient chariot racing circuit to the tower.

The fragmented remains of a massive public bath connected to the city's water supply.

This enormous censer uses a pulley system installed over 400 years ago.

These magnificently sculpted tombs represent Spain's own legendary version of "Romeo and Juliet."

A fantastic Christmas tradition where defecation meets the manger.

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

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

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

This influential Renaissance-era library was once the haunt of kings and monks.

The atmospheric ruins of a historic church can be found on a hill above the city of Oviedo.

A magnificent, long-abandoned castle built in the wake of the reconquest of Spain.

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

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

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

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

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

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

A reproduction of the famous prehistoric cave paintings is hidden underground at the National Archaeological Museum.

An iconic and controversial ancient Iberian funerary urn with a hauntingly penetrating gaze.