Castello Sforzesco
Sightseeing in Milan picture - The castle, which rises up at the town's highest point, is grafted on to the planimetric foundation and structure of the pre-existing walled city dating back to the twelfth and thirteenth centuries. The castle was built in two important and consecutive stages, one under the Viscontis and the other under the Sforzas. The first was prompted by the mayor of Vigevano, Luchino Visconti. In 1341 he ordered the building of the "Rocca Vecchia", a fortress for keeping watch over the road to Milan.