Qubbat Musa is one of many constructions built during the Ayyubid period on al-Haram al-Sharif. It was built in the mid 13th century on the west esplande in close proximity to Bab al-Silsila, the main entrance to the Haram. The simple square building sits on a stone base and is crowned with an octagonal drum that forms the zone of transition to a rounded, slightly elongated stone dome. A semi-circular mihrab at the south wall is expressed on the exterior facade, between two rectangular windows.
Sources:
Grabar, Oleg and Nuseibeh Said. 1996. The Dome of the Rock. New York: Rizzoli, 171
Burgoyne, Michael Hamilton. 1987. Mamluk Jerusalem: An Architectural Study. Jerusalem: British School of Archeology in Jerusalem, 246
Burgoyne, Michael H. 1976. A Chronolofical Index to the Muslim Monumnets of Jerusalem. In The Architecture of Islamic Jerusalem. Jerusalem: The British School of Archaeology in Jerusalem.