This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

A small church ornamented with medieval erotic sculptures.

A hidden medieval crypt where a famous legend says the devil used to teach black magic.

A New York–based physician returned home to Spain to build his own elaborate monument to Christopher Columbus.

A cheese discovery made by shepherds became the pride of a region.

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

The Roman city was the birthplace of various emperors and is home to one of the empire's most impressive architectural feats.

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

The ruins of a 2,000-year-old Roman fishing village perched on one of the best beaches in Spain.

This imposing modern citadel started out as a home renovation project.

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

An archeological treasure trove stumbled upon by a couple of children.

Seaside ruins of a settlement that date back to the first century B.C.

This enchanting hamlet carved into the rock looks like something straight out of Tolkien's Rivendell.

This remarkable prehistoric town is full of watchtowers and houses that have withstood thousands of years.

An automaton perched above an classic clock and watch store

A magnificent place to see authentic paleolithic cave paintings that are an astounding 33,000 years old.

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

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

A historic Christian shrine nestled within a spectacular natural cave.

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.

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

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