Soltaniyeh Dome

The Dome of Soltaniyeh in Soltaniyeh city, Zanjan Province, Iran, traditionally so called, is a complex of ruins centering on the Mausoleum of the Mongol ruler Il-khan Öljeitü, also known as Muhammad Khodabandeh.

The main building, erected between 1302 and 1312 AD, may have the oldest double-shell dome in Iran, a view of the construction made by Dieulafoy, but this has been disputed by André Godard. In Godard's view, it is a normal, if spectacularly large dome, with a thin skin on top for the faience, and is not a double dome.