 At the outside of town is the La Sforzesca, a rectangular villa-fortress with corner palace-towers, built in 1486 by Ludovico il Moro.In the 17th century one end of the Piazza Ducale was enclosed by the concave Baroque façade of the Cathedral, cleverly adjusted to bring the ancient duomo into a line perpendicular to the axis of the piazza and centered on it.The Cathedral was begun in 1532 under Duke Francesco II, who commissioned the design to Antonio da Lonate.