Las masterpieces, such as Italo Calvino's LAS Invisible Cities (1972), are inexhaustible. The travel stories that Marco Polo describes to Kublai Khan serve as a trigger to start a fertile dialogue between architecture, literature and philosophy. Nothing can ser m current than to speak of that which speaks of the timeless. Nothing can ser m as beautiful as ar from a poem by amor las cities, especially today, when cada time is m it is difficult cil live them.