Spain's largest bullring offers a unique glimpse at architecture and history.

Its appearance in "Game of Thrones" may spur on the long-awaited restoration of this medieval shipyard.

The final resting place of the great navigator, or maybe his brother.

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.

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

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

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

The first mechanized factory in Spain is also one of the most significant mints in the history of money.

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

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

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

A controversial art piece that harkens back to local folklore.

These ancient artifacts are a testament to the enduring significance of the bull in Spanish culture.

A lush indoor jungle fills this bustling Madrid transportation hub.

A pair of gigantic baby heads greet passengers at Atocha Station.

This funky former tobacco factory is one of the most striking examples of Madrid's cultural diversity.

Strange masks and obscure costumes are housed in this old Madrid corrala.

An old, deep well, connected with a miraculous, divine rescue and the patron saint of Madrid.

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

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

Inside this church are the alleged remains of the patron saint of lovers, epileptics, and beekeepers.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.