Diyarbakir Fortress, is a historical fortress in Sur, Diyarbakır, Turkey. It consists of inner fortress and outer fortress.
Main gates of the fortress are, Dag (Mountain) Gate, Urfa Gate, Mardin Gate and Yeni (New) Gate. It was built approximately 9000 years ago and has the second most wide and long security walls after Great Wall of China.
The UNESCO added the building to their tentative list on 2000, and listed it as a world heritage in 2015 along with Hevsel Gardens.