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
Restoration of the Sistine Chapel frescoes had the courage to commence the restoration process, and thanks not only those who visited the restoration while it was in progress and gave the benefit of their knowledge and experience, but also those who were critical of the enterprise. Pietrangeli made acknowledgement that these people spurred the team on to punctilious documentation so that a full report of criteria and methods should be available to those who are interested, both in the present and the future. Restoration of the Sistine Chapel frescoes The conservation-restoration of the frescoes of the Sistine Chapel was one of the most significant conservation-restorations of