Link Ferrara, City of the Renaissance, and its Po Delta _ Unesco.org: http://whc.unesco.org/en/list/733/ Ferrara, City of the Renaissance, and its Po Delta _ Associazione Beni Italiani Patrimonio Mondiale Unesco: http://www.sitiunesco.it/?p=24%2F Official Website for Ferrara and its Province: http://www.ferraraterraeacqua.it/it/home-page