building of Via Sistina (later named Borgo Sant'Angelo), a road leading from Castel Sant'Angelo to Saint Peter. All of that was done to facilitate the integration of the Vatican Hill and Borgo with the heart of Old Rome. That was part of a broader scheme of urbanization carried out under Sixtus IV, who swept the long-established markets from the Campidoglio in 1477 and decreed in a bull of 1480 the widening of streets and the first post-Roman paving, the removal of porticoes and other post-classical impediments to free public passage. At the beginning of his papacy, in 1471, Sixtus had donated several historically important Roman sculptures that founded a papal collection of art, which would eventually develop into the collections of the Capitoline Museums. He also refounded, enriched and enlarged the Vatican Library. He had Regiomontanus attempt the first sanctioned reorganisation of the Julian calendar and increased the size and prestige of the papal chapel choir, bringing singers and some prominent composers (Gaspar van Weerbeke, Marbrianus de Orto and Bertrandus Vaqueras) to Rome from the north. In addition to being a patron of the arts, Sixtus was a patron of the sciences. Before he became pope, he had spent time at the very liberal and cosmopolitan University of Padua, which maintained considerable independence from the Church and had a very international character. As Pope, he issued a papal bull allowing local bishops to give the bodies of executed criminals and unidentified corpses to physicians and artists for dissection. It was that access to corpses which allowed the anatomist Vesalius, along with Titian's pupil Jan Stephen van Calcar, to complete the revolutionary medical/anatomical text De humani corporis fabrica. Other activities Consistories The Pope created 34 cardinals in eight consistories held during his reign, among them three nephews, one grandnephew and one other relative, thus continuing the practice of nepotism that he and his successors would engage in during this period. Canonizations and beatifications Sixtus IV named seven new saints, with the most notable being Bonaventure (1482); he also beatified one person, John Buoni (1483). Uppsala University In 1477, Sixtus IV issued a papal bull authorizing the creation of Uppsala University – the first university in Sweden and in the whole of Scandinavia. The choice of this location for the university derived from the fact that the archbishopric of Uppsala had been one of the most important sees in Sweden proper since