Most citadel houses were inward-looking and, therefore, had few or no external windows. Windows were usually small by today\'s standards- often no more than 50-70 centimeters wide and about 1.2 meters high- and obtained daylight from the courtyard. They were usually made of wood and often designed with either semi-circular or segmental tops and nearly always covered by wrought-iron screens.
Windows of important rooms were usually framed with stone or marble and had elaborate screens and sometimes provided with colored glass. Wrought-iron screens came in two patterns the most ubiquitous of which was the typical spiral motif found in many parts of Iraq, or with simple parallel bars. It is interesting to mention here that, curiously, they were four shanashil windows in the citadel (Oriel-like windows projecting over alleyways) but have all disappeared. Such windows were not at all typical of the architecture of the citadel and must have been introduced relatively recently.