Located near corso Sempione, from where it takes its name, Sempione Park is Milan's biggest green area. It's perfect for long walks and summer picnics, with a large central meadow, an artificial lake and a fountain designed by De Chirico.
A 19th-century project by architect Emilio Alemagna, the park also houses the Castello Sforzesco, one of the most popular sites in the city, the Arena, a neoclassic building designed by Luigi Canonica in 1806, and the Arco della Pace, a lesser Arc de Triomphe built for the glorification of Napoleon.
Recent efforts have also allowed for the re-opening of the 109-metre-high steel tube construction, Torre Littoria or Branca, a 1932 project by world-famous architects Cesare Chiodi, Giò Ponti and Ettore Ferrari, which had been closed to the public for years.