For a glimpse of the magnificent interiors and gardens of the Palazzo Arcivescovile, the palace of 17th-century Archbishop Giovanni Antonio Capobianco, which is next to the Duomo, and the wondrous Biblioteca Alagoniana, this museum is well worth 45 minutes of your time. Visitors proceed through the ground floor, first taking in the pious displays in the vaulted Cappella Sveva, reminiscent of (and probably hewn by) Castello Maniace's stonemasons. Next is the atmospheric 17th-century Carcere Vescovile, with austere prison cells, narrow windows, and internal courtyard, all designed for the control of the inmates. Corridors lined with historic portraits of Ortigia worthies and documents lead to the uplifting itinerary highlight, the Biblioteca Alagoniana (1780), named for Bishop G. B. Alagona. Reeking of knowledge, intrigue, and mystery, the wood-lined library contains over 70,000 volumes, including 21 priceless Latin, Greek, and Arabic codexes, 17 incunabolo pamphlets from the late 1400s, and an illustrated Liber Cronicarium (1493, Nuremberg) by German polymath Hartmann Schedel (1440–1514). You exit the palazzo via the beautiful, flowery gardens.