The imposing staircase of Santa Maria del Monte (142 steps and a difference in height of more than 40 metres), built in the 17th century to fulfil an important urban planning function: to connect the upper and lower parts of the city. The current majolica covering of the risers and the lava stone slabs on the treads date back to 1954: 142 bands of tiles, all different, decorated with designs typical of the Caltagirone ceramic tradition and dating from Sicilian, Arab, Norman and Spanish motifs. The theme is therefore very special: a staircase, a road that is also a wall, an uphill monument, but also a place to stand step by step, an architectural path connecting earth to sky. To celebrate the feast of St. James, patron saint of Caltagirone, on 24 and 25 July the steps are transformed into an authentic tapestry of lights: thousands of small coloured paper lamps containing a small oil lantern are placed on the steps and lit in the evening to form huge patterns, each time different according to the occasion. On other days of the year the steps of S. Maria del Monte had no night lighting to reveal their architectural beauty. The main objective of the lighting project is to return the staircase to the city with lighting that is not scenographic but based on quality and perception rather than on parameters linked to regulations or functional criteria. This quality of lighting was achieved by focusing on a deliberately non-uniform effect with a clear alternation of light and shadow. The elimination of glare along the main pathway from bottom to top is also fundamental, achieved by the appropriate orientation of the projectors, which are rotated slightly in the direction of the slope, also making it possible to have a clear reading of the tile strips without shadows or reflections. The small luminaires are placed in positions which are difficult to see both during the day and at night. Architect Piero Castiglioni’s architectural lighting design project as an opportunity for a qualitative approach to the subject of urban lighting.
Orsay Museum where architecture became a big lighting device, the reflections of light bulbs with walls and ceilings create a uniform light without shadows. Groups of projectors in Grassi Palace recall a small football field. Here was born a new type of lighting device. Reflector lamps and articulated support gives life at the "Cestello". Spasa na Krovi is a perfection of Mantova project. Light beams aggregation allow the device size reduction and the dispersion light control.