View of the southeast entrance portal of the Masjid-e-Jameh or Friday Mosque of Esfahan. According to Oleg Grabar, the Friday Mosque is the most remarkable and celebrated of the group of mosques built in Iran in the period of the Great Saljuqs, who chose Esfahan as their capital. In his commentary on the building, Grabar writes that the Friday Mosque is extremely complex and, in spite of several studies and partially completed and published excavations, still far from being clearly understood. Like Chartres, with which it has often been compared, it is unique, and thus cannot be adduced to define a period. Of the mosque\u27s plan, he writes: It is a large, irregular aggregation of buildings whose northeast—southwest axis is 150 metre...