Harran Citadel

 

Ancient structures, including a Sabaean Temple which remained in use throughout the early Islamic period are shown in black. Early Islamic fortifications , including the East gate with its carved decorations, are shown in dark grey. The early thirteenth century citadel is shown in white with dark lines (After Hanisch and Faucherre).

Reference:

Davis Nicolle, "Saracen Strongholds, The Central and Eastern Islamic Lands," Fortress 87, Osprey Pub., London, 2009, pp. 5.