The spectacular terrace known as Takht-e-Marmar (Marble Throne) was built in 1806 by order of Fath Ali Shah Qajar (r. 1797-1834).  Adorned by paintings, marble-carvings, tile-work, stucco, mirrors, enamel, woodcarvings, and lattice windows; the throne embodies the finest of Iranian architecture. The Marble Throne is one of the oldest buildings of the historic Arg.  The existing throne, which is situated in the middle of the terrace (iwan), is made of the famous yellow marble of Yazd province.

 The throne is made of sixty-five pieces of marble and was designed by Mirza Baba Naghash Bashi (head painter) of the Qajar court.  Mohammad Ebrahim, the Royal Mason, oversaw the construction and several celebrated masters of the time worked on the execution of this masterpiece.  The architectural details and other ornaments of the terrace (iwan) were completed during the reigns of Fath Ali Shah and Nasser - ol- Din Shah (r. 1848-1896).

Coronations of Qajar kings, and formal court ceremonies were held on this terrace (iwan). The last coronation to be held at Takht-e-Marmar was the coronation of, the self-proclaimed King, Reza Khan Pahlavi in 1925.