This Arab fortress was once the largest citadel in Western Europe.

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

A neighborhood park in the city of Cáceres hides what some believe are revolutionary examples of Neanderthal cave art.

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

Barça football fans might see the insignia hidden in a church window as a divine sign.

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

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

This amended headstone marks the grave of a participant in one of the most successful military deceptions of all time.

The effect of this ancient form of image projection situated atop an 11th century Moorish palace is thrilling.

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

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

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

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

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

The streets of a sleepy Spanish town proudly exhibit some of the world's finest graffiti.

A modernist church in an ancient village.

A five-square-mile slice of Spain on the Mediterranean coast of North Africa.

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

Beautiful tiles decorate many of the town's surfaces and stand testimony to its glorious artistic history.

A historic Christian shrine nestled within a spectacular natural cave.

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

This fascinating and poignant museum chronicles every imaginable aspect of Spanish colonialism in the Americas.

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

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