The oldest finds on the Quirinale hill are burial tombs (dated by the 9th century B. C.), in ancient Rome the Hill became strategic and was heavely fortified, during the Imperial Age buildings were built... In Medieval times, vineyards, garden and sculptures bear witness of the past grandeur of Rome... The work that ultimely led to the current configuration of the Palace started on 1574 with the restructuring of the Villa (belonging to Cardinal Ippolito d´Este) commissioned by Pope Gregory XIII who wanted to construct on the Hill the Papal residence. Work on the edifice was finally completed under Pope Clement XII (1730-1740)... After the napoleonic Age, the building became, in 1879, the residence of Kings of Italy and in 1948 the Presidential Palace... Currently, the Hall of the Corazzieri... is rectangural and has a rather high ceiling. starting at a height of 5.5 meters, the room is entirely decorated by frescoes of Annibale Duranti. In the middle of the wooden ceiling, with golden decorations on a blue background by Carlo Maderno there is the Royal Coat of Arms wich was placed there in 1870. The overall rearrangements of the hall also included the overhaul of electric system which was brought in line with the latest European standards. The lighting system maintained the original position of the lamps within the cornice, while the light sources were standardised so as to avoid contact among them or with other metal or non metal components (FLARE, 24, 2000, pp. 58-61).