Salamanca is home to the oldest existing Hispanic university in Spain, founded by King Alfonso X in the Plateresque style. Santiago de Compostela's Gothic cathedral was rebuilt in the 11th century to house the tomb of St. James and receives many pilgrims. Barcelona's architectural highlights were built in the Modernism style by Antoni Gaudí. Córdoba's mosque-cathedral fuses Umayyad and Christian influences. Granada's iconic Alhambra palace and fortifications were constructed over centuries starting in the 9th century.