The Certosa di San Giacomo dates back to the second half of the 14th century, by the will of Count Giacomo Arcucci, Grand Camerario of Queen Giovanna I of Anjou, as evidenced by the valuable fresco that surmounts the entrance portal to the church, dating back to around 1371 and executed by the Florentine painter Niccolò di Tommaso. The fresco depicts the Virgin enthroned with Child with Count Giacomo Arcucci and Queen Giovanna I and Saints James and John the Baptist. The structure of the monastery responds to precise canonical rules: "high house" or cloistered convent and "low house" with service rooms. Today the Certosa presents a stratification of interventions that have often overlapped, transforming even the pre-existing one. Following the pirate raids, the Certosa suffered serious damage and, starting from 1563, was the subject of significant restoration works, as evidenced by the late Renaissance large cloister. The last act, which greatly influenced the future deterioration of the complex, was with the unification of Italy, when the assets and income of the Carthusian monks of Capri were ceded to the church of Ischia. An organic restoration project began in 1927, with the Superintendent Gino Chierici, who brought to light the original fourteenth-century structures. Recently, the Certosa has undergone a restoration and plant adaptation intervention by the Superintendence for Architectural and Landscape Heritage of Naples and the Province. Dedicated to San Giacomo, the church is the tallest building and therefore dominates the entire structure of the Certosa, belonging to the original fourteenth-century structure.