Four recent interventions on Milanese architecture of the twentieth century tell a good story about a theme of great topicality: the restoration of the modern heritage. Over the last century, Milan has expressed valuable designers who have been able to weave with particular skill the knowledge of the context with structural innovation, the use of new covering materials with a language in dialogue with tradition. The close link between architect, client and craftsman has produced silent masterpieces, capable of weaving the new image of the modern industrial city through the precision of detail and the experimentation of materials. All in parallel with the rich figurative culture of the artistic avant-garde, whose authors have also been protagonists of Italian design. Today, while the European milieu rediscovers the Milanese twentieth century, that constructive experimentation shows its fragility and forces a specific reflection on the different ways of working on its materials. One of t