Citadel of Damascus is a large medieval fortified palace and citadel located in Damascus, Syria. It was originally built as a fortification in 1076 AD by the Turkman warlord Atsiz bin Uvak. The project was later finished by the Seljuq ruler Tutush I. Saladin's brother Al-Adil rebuilt the citadel completely between 1203-1216 AD in response to the development of the counterweight trebuchet. The citadel was inscribed as a UNESCO World Heritage Site in 1979 as part of Ancient City of Damascus.