The Last Supper (Leonardo da Vinci) as it is told in the Gospel of John, 13:21. Leonardo has depicted the consternation that occurred among the Twelve Apostles when Jesus announced that one of them would betray him. Due to the methods used, a variety of environmental factors, and intentional damage, very little of the original painting remains today despite numerous restoration attempts, the last being completed in 1999. "The Last Supper" measures and covers an end wall of the dining hall at the monastery of Santa Maria delle Grazie in Milan, Italy. The theme was a traditional one for refectories, although the room was not a
Conservation-restoration of Leonardo da Vinci's The Last Supper 1517, Leonardo da Vinci's "The Last Supper" had already started to deteriorate. This fact was noted in many diaries and letters of the time. The corrosion of the work can be accredited to Leonardo’s unconventional painting technique for a work on a wall, as well as the surface itself. The refectory of Santa Maria delle Grazie sits in a low-lying part of the city, partial to flooding and dampness. The reverse of the wall on which Leonardo painted is an exterior wall and would have absorbed moisture. The painting was also exposed to the steam and smoke from the convent’s