Padua, one of northern Italy's oldest towns, was founded during the Roman time. Its picturesque medieval buildings and cobblestone streets have been carefully preserved. Founded in 1222, the University of Padua's commitment to intellectual freedom, encouraged many well-known historical figures to come to Padua. Graduates include Copernicus, who formulated the heliocentric theory. Dante, author of "The Divine Comedy," was a professor here. And of course, so was the great astronomer Galileo Galilei. Both the university and the city are infused with the spirit of tolerance that is maintained in the name of freedom.