 Vigevano was a Ghibelline commune, favoring the Emperor and was accordingly besieged and taken by the Milanese in 1201 and again in 1275.In 1328 it finally surrendered to Azzone Visconti, and thereafter shared the political fortunes of Milan.The Church of San Pietro Martire (St Peter Martyr) was built, with the adjacent Dominican convent, by Filippo Maria Visconti in 1445.