This former Moorish fortress and Catalonian royal residence now houses a hotel with magnificent views over Tortosa and the River Ebro

A botanical garden full of thought-provoking contemporary sculptures.

The water of this well in Toledo lost its sweetness after the death of a young love.

This ancient Roman cistern has been the source of many legends throughout the centuries.

Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.

The fragmented remains of a massive public bath connected to the city's water supply.

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

This grandiose staircase was part of the revival of a medieval Spanish architectural style combining Christian and Islamic influences.

This multi-level, aqueduct-footbridge hybrid is one of the greatest works of the Spanish Renaissance.

These magnificently sculpted tombs represent Spain's own legendary version of "Romeo and Juliet."

The friendship between Kansas City and Seville materialized in this sculpture

The current seat of the Parliament of Andalusia was once the epicenter of the Great Plague of Seville.

The world's largest wooden structure.

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

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

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

This enormous censer uses a pulley system installed over 400 years ago.

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

The facade of this 16th-century building is decorated with carvings of 300 seashells.

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

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

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

The Spanish writer devoted hours to writing 'Don Quixote' in this house.