Contrary to private areas, public spaces, where the family gathers and shares his social life, are in the back of the house, overlooking the water. In this sector the box is broken down into a large glazed and laterally staggered front that opens to the downward slope of the hillside. This scalability is produced by the successive social lag of three plants, phase shift which causes the appearance of double and triple heights that contribute to the dramatization of the interior space. From the outside, the ground floor and the upper levels appear as solid slabs studs firmly attached to the shell white crystal.