Ed-Deir was a fortress that protected the shortest caravan route between Kharga and the Nile. It stands on the eastern extreme of the Kharga Oasis, at the foot of Umm el-Ghanayin Mountain. It is made up of a fortress with 12 rounded towers, connected by a gallery. Only some of the rooms have survived, and are clearly marked by the long career of the fortress. Graffiti starting centuries ago, also include decorations of early 20th century airplanes.