The walls of Lucca, since the 1.500’s the architectural boundary between the ancient and new city, are experienced by residents as a public space and also an exhibition center and place where cultural events are held, with noted intellectual circles like the historical Caffè delle Mura. From here the competition for the transformation into a café-restaurant at the rampart of San Colombano, and the idea, expressed in the project proposal, is to make the life of the locale the protagonist in the life of the city. The transparency makes customers’ visits visible, and interprets the relationship between the interior scene and the vivid urban environment, while the oak floor boards allow, as in a theater stage, the recording also acoustically of customers’ presence. The same essence is used for the roof and the long bar counter, an organic layering of splinters that evoke Ceroli’s sculpture. The partitions between the reception and service spaces are made from treated iron, like sliding fixtures. The use of the materials, like the study of every other element, from furniture to lighting, helps to characterize the space as a total design of integration, respecting and harmonizing with the place’s history. The project is conceived so as to be completely reversible and detachable, bringing the rampart back one day to its original configuration.