Gozzoli's formative collaborations included those with Lorenzo and Vittorio Ghiberti on the third bronze door of the Baptistery, Florence, and with Fra Angelico (1447) on some frescoes in the chapel of Pope Nicholas V, Vatican, and on the ceiling of the Chapel of San Brizio in the cathedral at Orvieto. At Viterbo (after 1453) he painted nine frescoes of scenes from St. Rose's life. After painting an altarpiece at Perugia for Collegio Gerolominiano (1456) and visiting Rome in 1458, he returned to Florence, where he painted the frescoed chapel of the Medici-Riccardi Palace (dating from 1459 to 1460). Gozzoli's work as a whole has a rather empty facility, but in the latter commission, his “Procession of the Magi” reveals an artist of great decorative talent, with a pronounced gift for landscape and portraiture. By 1463 he was working at San Gimignano on a cycle of 17 scenes from the life of St. Augustine in the choir of Sant'Agostino (last scene signed and dated 1465) and on a fresco of St. Sebastian (1464). Between 1469 and 1485 he painted his most extensive commission, a series of 25 frescoes of Old Testament scenes for the Campo Santo (cemetery), Pisa.