In the 15th cent. a conscious revival of classical antiquity began (see Renaissance art and architecture). Brunelleschi emulated the ancient Romans in his masterly construction (1420–34) of the dome of the Florentine cathedral, and Michelozzo used antique elements in the courtyard of the Medici Palace, Florence (begun 1444). Alberti borrowed freely from a Roman triumphal arch in his design (1450s) for the exterior of the Tempio Malatestiano in Rimini. Bramante, Antonio da Sangallo, Peruzzi, and Raphael made Rome the center of spectacular architectural developments in the first half of the 16th cent., when St. Peter's was the most important project under way. Vignola did significant work in Rome in the latter part of the 16th cent., while in N Italy the formal classicism of Palladio was a potent factor in the spreading of Renaissance architecture throughout Europe. The monumental work of Michelangelo reflected elements of mannerism and his influence extended into the baroque period.