Panteón de Agripa
Beginning in the mid-15th century, the Gothic style gradually lost its dominance in Europe. It had never been popular in Italy, and in the mid-15th century the Italians, drawing upon ancient Roman ruins, returned to classical models. The dome of Florence Cathedral (1420–1436) by Filippo Brunelleschi, inspired by the Pantheon, Rome, was one of the first Renaissance landmarks, but it also employed Gothic technology; the outer skin of the dome was supported by a framework of twenty-four ribs.