The city looks to the future. "I've never seen the world so divided, but not so united," says writer Suketu Mehta. And cities, hit by the pandemic, are territories where this feeling is intensifying. Although the problems came from before, now the urgency of change has become more evident. "It is time to repair them", emphasizes the ecologist Luis Zambrano, while the landscaper Petra Blaisse celebrates the growing interest in the "green life" and the architect Juan Herreros insists that the renewed utopia of living together must be a choral project. Experts from different disciplines present their proposals in this special issue, which discovers, among others, the new public spaces in New York, the cycling boom in Mexico City and urban renaturation initiatives.