Villa S_O3 is located in the city of Palermo. Before the intervention, the building consisted of an old barn in a complete state of degradation and abandonment. Starting from certain spatial constraints and functional interior is given “skin” all outside through a measurement and subsequent operation of "subtraction and sum” of each quoin calcarenite that composes the
facades. Hence the idea of creating new openings taking into account the size of the rows of blocks and their dimensions. The stereometric nature of building has been preserved and has been exalted massive aspect of the facade: first with the creation of new grouting, intented from the outer contour of the stones, then with the appication of stone slabs which nourish the staggered asymmetry of he new openings. New had to merge with he existing without prevarication, but at the same time without artificially imitate. A new "musical rhythm" of the facade has taken life.