Sāmarrā (Arabic: سامَرّاء‎) is a city in Iraq. It stands on the east bank of the Tigris in the Saladin Governorate, 125 kilometers (78 mi) north of Baghdad. In 2003 the city had an estimated population of 348,700. Samarra is in the Sunni Triangle.The city was once the capital of the Abbasid Caliphate and the only remaining Islamic capital that retains its original plan, architecture and artistic relics. In 2007, UNESCO named Samarra one of its World Heritage Sites.