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

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

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

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

A display of torture devices used in the Spanish Inquisition and other scourges of medieval Europe.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

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

A 16th-century Andalusian palace.

Occupied for six centuries by Franciscan Order nuns, this monastery is an amazing ode to Catalán Gothic architecture.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

A Spanish town built into the cliffs.

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

A lush indoor jungle fills this bustling Madrid transportation hub.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

This cemetery features modernist statues as strange as its name.

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

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

This 135-year-old weather station studied the effects of the climate on human health.

An ancient knight and a symbol of the city's freedom.

Formerly Yugoslavia's "forbidden island," this sleepy little city still holds the abandoned remains of military strongholds.