The Chain Dome is located on the eastern side of the Dome of the Rock Mosque. It was ordered to be built by the Umayyad Caliph Abd al-Malik ibn Marwan, and it is believed to be a miniature model of the Dome of the Rock Mosque. The structure is hexagonal and supported by six columns, surrounded by an eleven-sided corridor of arches supported by eleven columns. It features a mihrab on the southern side. The dome has undergone several restorations, including work by the Mamluk Sultan al-Zahir Baybars and most recently by the Al-Aqsa Mosque Reconstruction Committee, which covered its dome with lead sheets in 1996.