The presence of three monumental emergencies: Church of Santa Maria delle Grazie, Conventual Church of San Lorenzo, Oratory of Sant'Ansano, positioned on a single scenic theatrical backdrop with staggered wings, makes Piazza San Lorenzo unique on a national level. The project is all about this theme with a vast reservoir that recomposes the original perceptive status of the place. Along the east and west side walls there are rows of trees that define both new paths and relaxation spaces. The road to the east is freed from car stalls and reduced in section in order to make the building fronts dialogue with the new public space. The project focuses on the dialectical relationship between natural and mineral where the plastic masses of the Monuments and the minor Urban Fabric dialogue through the iridescent reflection of the floor surfaces with differentiated roughness. The inclusion of the natural element, in addition to ecological reasons of shading and draining surface, represents the link with the memory and history of the place. The project area was historically home to nurseries and vegetable gardens: the nursery activity is documented within the San Lorenzo complex until a few decades ago, moreover Pistoia has always had a strong link with the nursery cultivation. Memory and innovation find their balanced dialogue in the project in the name of a new and contemporary scenario of urban landscape. The new green system assumes fundamental importance both for the ecological and environmental aspects, representing a very large area of incidence on the entire reservoir and therefore guaranteeing excellent soil permeability (far greater than the pre-existing flowerbed) and a consistent reduction in CO2, and for the spatial definition of visual escapes and the structuring of micro-areas of social relations. The greenery is structured by the system of row trees, by the surfaces with shrubs and perennials. In this project we designed the urban space with the aim of creating a "domestic" public space so that it would become the "garden of the city".