Medieval pilgrims walked for months to Santiago Cathedral, home of the relics of St. James. It has a Baroque facade and magnificent Romanesque portals.

The Mezquita of Cordoba is a beautiful and fascinating 8th-century mosque that symbolizes the religious changes Cordoba has undergone over the centuries. It is now used as a cathedral.

Located atop a rugged mountain near Barcelona, this popular pilgrimage destination has attracted pilgrims since the 12th century, who come to venerate the miraculous Black Madonna.

The Temple Expiatori de la Sagrada Família is a magnificent basilica designed by celebrated Art Nouveau architect Antoni Gaudi. It remains unfinished, with estimated completion in 2026.

Famed for its magnificent collection of Spanish and European paintings, the Prado also houses Classical sculpture, medieval religious treasures and 11th-century frescoes.

Located in northwest Spain along the Camino de Santiago, León Cathedral was built in a French Gothic style in the 13th century.

This massive Gothic cathedral is brimming with art treasures, including several El Grecos, a 10-foot-high gilded monstrance, and carved altarpieces that stretch to the ceiling.

Originally a synagogue and later a church, this 13th-century Mudejar building with white horseshoe arches looks more like a mosque.