This walk starts in Piazza Cavour, where you come across the Palazzo dell’Informazione (Palace of Information), a fine example of a 1930s building in the Rationalist style. Proceeding in the opposite direction, towards Corso Venezia, you come to Palazzo Castiglioni, an acclaimed masterpiece of Milanese Art Nouveau that represents a high-water mark of 20th-century architecture. The area that plays host to Villa Necchi Campiglio contains a wealth of 20th-century private buildings, including the elaborate Palazzo Fidia (1932) and the exceptionally original Palazzo Berri Meregalli (1911). From here, passing through the circle of the bastions, you come to the Hotel Diana on Viale Piave, from where it is easy to reach the Via Malpighi area, which includes several great Art Nouveau buildings, such as Casa Guazzoni and Casa Galimberti. You have now reached Porta Venezia, which is overlooked by Casa Torre Rasini, designed by Giò Ponti (1933).