The spire has an eight-story glass-covered base The Jewel which belongs to a scientific center having its own small exhibition, another observation deck at 475 m 1,558 ft and a prayer floor in 480 m 1,570 ft.
The building complex is metres away from the world's largest and 's most sacred site, the.
Retrieved 6 September 2012.
The developer and contractor of the complex is the , the Kingdom's largest.
The crescent was constructed in by Premier Composite Technologies in April 2011.
The first fire accident was at Hajar Tower on 28 October 2008.