Valenza is a comune in the Province of Alessandria in the Italian region Piedmont, located about 80 kilometres east of Turin and about 11 kil…Valenza is a comune in the Province of Alessandria in the Italian region Piedmont, located about 80 kilometres east of Turin and about 11 kilometres north of Alessandria, in the extreme Montferrat’s offshoots, in the Lombardy’s border.