THE FOUNDATION BY THE VISCONTI
The old little fortress called 'di Porta Giovia' was built in the period from 1360 to 1370 along Milan's medieval walls, of which it includes the gate with the same name. Galeazzo II Visconti decided to have this fortress built basically as a defence. Then, his successors Gian Galeazzo and Filippo Maria went on with the building. In particular, the latter made the fortress his residence and arranged the great park in the northern area. The Visconti Castle had a square plan (180x180 meters). A tower was built in each corner.