The Scrovegni Chapel contains one of the greatest masterpieces of 14th-century Italian painting. It contains the most comprehensive cycle of frescoes ever painted by Giotto. Now, a place so rich in history could not fail to have its secrets too. The frescoes are enchanting, it is true, but they are not the only thing to see. For example, on Christmas Day, sunlight shines through the chapel windows and illuminates first the doorway, through which the Scrovegni family once entered, then the altar, and finally the nativity scene. The face of the Madonna is also illuminated, thanks to special holes. Both on 8 September (the day of her birth) and 25 March, the day of the Annunciation.