Cité-jardin
Construction started on the area in the 1920s, when architect Gustavo Giovannoni planned and built a new borough, inspired by the principles of the Garden city movement. Piazza Sempione is the spectacular entry to the quarter, surrounded by the edifices that were planned by Giovannoni himself and by Innocenzo Sabbatini. The quarter was called Città Giardino Aniene, and was officially renamed Monte Sacro in 1924.