History of Rome Library was officially founded on 15 June 1475. He restored several churches, including Santa Maria del Popolo, the Aqua Virgo and the Hospital of the Holy Spirit; paved several streets and also built a famous bridge over the Tiber river, which still bears his name. His main building project was the Sistine Chapel in the Vatican Palace. Its decoration called on some of the most renowned artists of the age, including Mino da Fiesole, Sandro Botticelli, Domenico Ghirlandaio, Pietro Perugino, Luca Signorelli and Pinturicchio, and in the 16th century Michelangelo decorated the ceiling with his famous masterpiece, contributing to what
Sistine Chapel ceiling to a strongly projecting painted cornice that runs right around the ceiling, separating the pictorial areas of the biblical scenes from the figures of Prophets, Sibyls, and Ancestors, who literally and figuratively support the narratives. Ten broad painted crossribs of travertine cross the ceiling and divide it into alternately wide and narrow pictorial spaces, a grid that gives all the figures their defined place. A great number of small figures are integrated with the painted architecture, their purpose apparently purely decorative. These include two faux marble "putti" below the cornice on each rib, each one a male and female pair;