The goal of this article is to demonstrate that there is an aspect of poetics in Le Corbusier's urbanism and that this theme is maintained and you can see it being transformed through the theoretical models and its derivations. From the methodological and theoretical point of view, we make the assumption that the poetics is the result of the duality between art and function present in his thought, which comes from the historical moment in which his work was made and from his personal background. This analysis is structured by grouping his urban planning works in for phases; the 1920s: the Ideal City; 1929-38: the cities of South America and the viaduct; 1930-50: the Ville Radieuse; after the II World War: the city of 7V and the Unite d'habitation. The final considerations bring back the general vision of his urban planning works and tie it to the concept of utopia.