<P> Ghiberti, appointed coadjutator, drew a salary equal to Brunelleschi's and, though neither was awarded the announced prize of 200 florins, was promised equal credit, although he spent most of his time on other projects . When Brunelleschi became ill, or feigned illness, the project was briefly in the hands of Ghiberti . But Ghiberti soon had to admit that the whole project was beyond him . In 1423, Brunelleschi was back in charge and took over sole responsibility . </P> <P> Work started on the dome in 1420 and was completed in 1436 . The cathedral was consecrated by Pope Eugene IV on March 25, 1436, (the first day of the year according to the Florentine calendar). It was the first' octagonal' dome in history to be built without a temporary wooden supporting frame . It was one of the most impressive projects of the Renaissance . During the consecration in 1436, Guillaume Dufay's motet Nuper rosarum flores was performed . The structure of this motet was strongly influenced by the structure of the dome . </P> <P> The decoration of the exterior of the cathedral, begun in the 14th century, was not completed until 1887, when the polychrome marble façade was completed with the design of Emilio De Fabris . The floor of the church was relaid in marble tiles in the 16th century . </P> <P> The exterior walls are faced in alternate vertical and horizontal bands of polychrome marble from Carrara (white), Prato (green), Siena (red), Lavenza and a few other places . These marble bands had to repeat the already existing bands on the walls of the earlier adjacent baptistery the Battistero di San Giovanni and Giotto's Bell Tower . There are two side doors: the Doors of the Canonici (south side) and the Door of the Mandorla (north side) with sculptures by Nanni di Banco, Donatello, and Jacopo della Quercia . The six side windows, notable for their delicate tracery and ornaments, are separated by pilasters . Only the four windows closest to the transept admit light; the other two are merely ornamental . The clerestory windows are round, a common feature in Italian Gothic . </P>

Who is buried in the duomo in florence