At the age of 30 years, he has been invited to come back to Rome in order to design the Tomb, with the Pope Julius, it takes about 40 years after solving the raids until successful in the years later in 1882, 1545 1546 he became architect of people in St. Peter's Basilica at Rome, with big and beautiful, which is considered a masterpiece of world architecture. Specifically, the section is a dome.