 The architecture of Ferrara benefitted from the genius of Biagio Rossetti, who was asked in 1484 by Ercole I to redesign the plan of the city.The resulting "Addizione Erculea" is one of the most important and beautiful examples of renaissance city planning and contributed to the selection of Ferrara as a World Heritage Site by UNESCO.Alfonso married the notorious Lucrezia Borgia, and continued the war with Venice with success.