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.

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 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.

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.

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

This 18th-century Franciscan church boasts the largest dome in Spain.

Built in a Moorish style in 1366, this synagogue became a church after 1492 but is now being restored to its original form. Hebrew inscriptions adorn the walls of this major Jewish site.

Dating from the late 19th and 20th centuries, Madrid's cathedral is very new by European standards and its traditional-meets-modern design reflects its youth.