The cannon ball and te anti-aircraft shelter
The times of wars always try to be forgotten, but often we forget that instead, these years can give new shape to the cities. For example, the revolts of the Milanese against the Austrians are still witnessed by the cannon ball that you will find stuck near Porta Romana, on Acerbi Palace, also called "Casa del Diavolo" (House of the Devil). Thrown during the five days of Milan in 1848, almost 200 years later, it did not do any damage, but it is still there, to remember an important historical moment for the city. Some cellars used as air-raid shelters date back to more recent times (Second World War). If you pay attention, walking around Milan, as in via Pace or in via Vasari, you will still find visible on the outside walls of the houses some arrows with the writing "US", which does not stand for "United States" but for "Uscite di Sicurezza". Among the places of the hidden Milan there are the Antiaircraft Shelter n.87 and the Shelter of Piazza Grandi, able to accommodate up to 400 civilians.