The Ziggurat of Dur-Kurigalzu was built in the 14th century BC by the Kassite king Kurigalzu. The core of the structure consists of sun-dried square bricks with reed mats every 7 layers of brick for drainage and to assist in holding the bricks together by providing a continuous layer of support. The outer layers of the ziggurat are made from fired bricks. An inscription on one of the fired bricks states that it was laid during the reign of King Kurigalzu II. Today both types of brick, sun-dried and fired, are still made in Iraq in the same fashion and used in farm houses.
Security was significant in this area because of its close proximity to the notorious Abu Ghraib prison where the US Army and the American Central Intelligence Agency committed a series of human rights violations against detainees including physical and sexual abuse, torture, rape, sodomy, and murder after the 2003 invasion of Iraq. These abuses came to light with reports published in late 2003 by Amnesty International and the Associated Press.