The setting of the exhibition "Russian and Soviet Art 1870/1930" held in the Lingotto building offered the visitor, on an area of 6.000 sq. m, an exhaustive view of avantgard russian art through paintings, sculptures and original period documents. The architectonic elements studied by Piano are simple, the role of protagonist in determing the form of the space having been left to "artificial light". It´s a light system based on reflected light (on white panels) obtained with metallic iodide lamps, screened by pink filters. Natural light is completely removed from the space. The existing openings of the building have been blocked with heavy cloths: an air space of varied depths is interposed between the external walls and the exhibiting area: fascination and impressive space. (DOMUS n° 711, december 1989)