Sistine Chapel ceiling according to the Gospel of Matthew. However, the genealogy is now incomplete, since the two lunettes of the windows in the Altar wall were destroyed by Michelangelo when he returned to the Sistine Chapel in 1537 to paint The Last Judgment. Only engravings, based on a drawing that has since been lost, remain of them. The sequence of tablets seems a little erratic as one plaque has four names, most have three or two, and two plaques have only one. Moreover, the progression moves from one side of the building to the other, but not consistently, and the figures the
Sistine Chapel exterior can be seen only from nearby windows and light-wells in the palace. Subsidence and cracking of masonry such as must also have affected the Cappella Maggiore has necessitated the building of very large buttresses to brace the exterior walls. The accretion of other buildings has further altered the exterior appearance of the Chapel. The building is divided into three stories of which the lowest is a very tall basement level with several utilitarian windows and a doorway giving onto the exterior court. Internally, the basement is robustly vaulted to support the chapel. Above is the main space, the Sistine