Church
Basílica de Nuestra Señora del Pilar
This great baroque cavern of Catholicism stands on the site where, the faithful believe, the Virgin Mary appeared to Santiago (St James the Apostle) atop a pilar (pillar) of jasper on 2 January 40 CE, leaving the pillar behind as testimony of her visit. A chapel was built around the pillar, followed by a series of ever more grandiose churches, culminating in the enormous basilica.