Parco Sempione covers 116 acres in the city center, just behind the Castello Sforzesco. It was laid out in the late 1800s, and received a major facelift in 1996. The grounds include gravel paths for walking or jogging, a triumphal arch at the far end of the park, a lake, and even a small arena used for concerts and some sporting events. There’s also a tower in the park - the Torre Branca - built in 1933 and offering views over the entire city.
Museums inside the Parco Sempione include the fantastic contemporary art and design museum called the Triennale and the city’s small aquarium. On sunny weekends, you’ll find much of the city is relaxing in the park - and there’s no reason you shouldn’t follow suit.