This large marble slab, decorated with mosaic and inlay work featuring stylized floral and star motifs, is the largest among the surviving fragments of the Cathedral’s medieval façade displayed in this room. It dates to the period when Arnolfo di Cambio directed construction of the building site, between 1296 and the early years of the 14th century. The medieval façade, left unfinished, was dismantled in 1587, and only a few architectural elements have survived. This fragment, along with the jambs and backrest of the throne of the Madonna with Glass Eyes (on display in the previous room), was discovered by Emilio De Fabris during preliminary work for the construction of the new façade in 1871, and was immediately recognized as part of the original facing. This probably decorated the architrave of the central portal. The brilliance of the marble and mosaic fragments, still partially visible in these remains, not only contributed to the magnificence of the Cathedral, but also evoked the image of the Heavenly Jerusalem described in the Book of Revelation—the Holy City where the blessed will dwell at the end of time.