The architectural and cultural heritage built in the early decades of the twentieth century is often a critical and controversial topic. “History is always written by winners”, and in the case of cultural conflicts, the narratives of the events support the prevalence of a thesis on the others that was overshadowed, denied and then forgotten. It is the case of the opposition between the two types of Modernism: the rigorous Modern Movement and the most decorative Modern Style. They are the two souls of Modernism: a democratic tendency focused on art-industry relationship, and “the other” aesthetic, elitist, decadent still tied to the handmade craft and the elitist production of luxury goods. These two opposite movements influenced each other until their competition has brought to stay out of history “the other modernity”, blurred by the pervasiveness of the Modern Movement. In this article will be discussed the two souls of Modernism and the prevailing of the Modern Movement with the consequent forgetting of the Modern Style, highlighting their different aesthetics, social and ideological features.