The stations are designed with the idea of the outside-inside continuity, that makes this underground place a cozy, safe and well-lit public space. To do so the station box has been open in order to bring natural light into the station, creating a modern, clean and bright interior: this permits easy orientation and legible, visible circulation pathways. The interior is also characterized by the volume of the sloped wall, clad by a stainless steel sheet that reflects the light coming in from the skylights. The volume contains most of the MEP equipments and also has a structural function. The areas accessible by users, the floor and some surfaces and items are in diorite, a natural stone halfway in the family of granite and gabbro. It has excellent characteristics of strength, durability and serviceability and is specifically indicated in city contexts and infrastructures where critical conditions occur from the point of wear and safety. This project combines in a very good way technology, structure and architectural plasticity, trough elegant solutions, that well represents the poetics of the studio.