The dome has no lantern, its plain ceiling being pierced by two large side windows. There are four chapels on either side, besides that at the end and those that open into the choir, the transept, and the sanctuary. It contains many paintings by eminent artists. A silver reredos, which was behind the altar, was carried away in the war of 1808, and converted into coin to meet the expenses of the campaign. There are two paintings by Francisco de Goya in the San Francesco chapel. Behind the Chapel of the Blessed Sacrament is a small Renaissance chapel built by Calixtus III. Beside the cathedral is the chapel dedicated to the Our Lady of the Forsaken "(Mare de Déu dels desamparats)".