The Renaissance began in Italy in the 15th century and was characterized by a revival of interest in classical learning. Wealthy patrons funded artists in cities like Florence, where figures like Lorenzo de' Medici supported the work of sculptors, painters, and writers. Engineers like Brunelleschi made architectural innovations, such as designing the dome of Florence Cathedral without internal supports. Michelangelo was one of the period's great artists, producing famous works like his David sculpture and paintings on the ceiling of the Sistine Chapel. The printing press helped spread new ideas rapidly during this period of cultural and intellectual rebirth.