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 by Leonardo da Vinci, depict the coats of arms of Leonardo's patron, Ludovico Sforza and his sons, Maximilian and Francesco. The 20th century brought advancements in scientific technologies that were used in the restoration and conservation of "The Last Supper". The first person to conduct an analysis of the painting’s chemical components was Luigi Cavenaghi, in 1908. From this analysis, Cavenaghi concluded that the painting was completed in tempera paint, on two layers of plaster. In 1924, the Italian painter Oreste Silvestri led the task of cleaning Leonardo's work, as well as applying new plaster to the edges of the