Embellished with patches of public parks, the remains of the city gate and a couple of canals, Milan is a dense tangle of streets in the pattern of a web. Rossi’s monument in Segrate is located at the southeast end of the red metro thread. At the other, is his unité d’habitation of Gallaratese located in a northwest suburb. At Milan’s centre is the vertically articulated Duomo, from which one can access the roof and survey those tangled streets. The vast rectangular open space defined by the Duomo leeks into the Galleria Vittorio Emanuele II, a thirty metre high vaulted street designed by Giuseppe Mengoni c1870, and connects to a smaller open space just north. The sequence of spaces is quite lovely.