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.

A towering monument in Spain has proven to be more labor-intensive than initially planned.

Stuck in the middle of a modern Madrid city block are the remains of a 19th century sports complex.

This lucky bronze frog was gifted to Madrid by a casino.

This enigmatic artifact is a rare depiction of an ancient Iberian noblewoman.

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

This embalmed man is one of the best preserved mummies from the Canary Islands.

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

The remains of this misplaced church were moved here stone by stone.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.