 Piazza Ducale was actually planned to form a noble forecourt to his castle, unified by the arcades that completely surround the square, an amenity of the new North Italian towns built in the 13th century.The town's main street enters through a sham arcaded façade that preserves the unity of the space as at the Place des Vosges.Ludovico demolished the former palazzo of the commune of Vigevano to create the space.