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

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

Fascinating exhibits of prehistoric and ancient artifacts displayed with a uniquely modern touch.

The largest medieval water tank on the Iberian Peninsula is preserved beneath the Cáceres Museum.

An impressive display of ships and artifacts from the ancient Mediterranean maritime trade.

The ruins of an ancient stadium that hosted gripping chariot and horse races.

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

Remarkably intact Roman stone fortifications have encircled this Spanish city for centuries.

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

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

This postmodern apartment block was designed to be a vertical neighborhood.

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.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

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

A medieval village holds a very modern hotel.

Giant granite sculptures representing family on the northern coast of Spain.

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

This ancient Spanish castle sits high upon a hilltop.

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

The oldest Roman lighthouse still in use.

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