During the reigns of Carlos I and Felipe II various catalogs of Antiquities was made, and Castulo deserves the attention of authors as Gregorio López Pinto, who in his "apologetics History of the very ancient city of Castulo" described the site indicating the strong walls of same and localized four main gateways to the city in the four cardinal points, as representing one of the last buildings in Castulo, the hermitage of Santa Eufemia, dedicated to the worship of this holy behind the false attribution of martyrdom in the city by Jerónimo Román de la Higuera in the late sixteenth century.