The design proposal, through research and evaluation of the final project, focuses on aesthetic and technical improvements, conforming to the project invariants. The project starts from the desire to emphasise industrial archaeology, not only by preserving the original volume, but also through architectural elements synthesised as contemporary grafts serving the structure. The former heating plant, already in close connection with San Donato Park, is now even more closely related to it, hosting a green roof as an extension of the park that will become part of the social life of the neighbourhood. The main intervention concerns the vertical connection tower at the back of the building. The tower houses two lifts and an external steel staircase completely covered with a semi-transparent textile covering. Through the tower it is possible to access all the rooms of the former heating plant: info point, museum of the plant, restaurant, bar and terrace.