Fodor's Expert Review Parco Sempione

Originally the gardens and parade grounds of the Castello Sforzesco, this open space was reorganized during the Napoleonic era, when the arena on its northeast side was constructed, and then turned into a park during the building boom at the end of the 19th century. It is still the lungs of the city's fashionable western neighborhoods, and the Aquarium still attracts Milan's schoolchildren. The park became a bit of a design showcase in 1933 with the construction of the Triennale.