This is one of the oldest mosques still standing in Iran, and it was built in the four-iwan architectural style, placing four gates face to face. An iwan is a vaulted open room. The qibla iwan on the southern side of the mosque was vaulted with muqarnas during the 13th century. Muqarnas are niche-like cells.

jameh mosque

The Jāmeh Mosque of Isfahān or Jāme' Mosque of Isfahān is the grand, congregational mosque of Isfahān city, within Isfahān Province, The mosque is the result of continual construction, reconstruction, additions and renovations on the site from around 771 to the end of the 20th century. The Grand Bazaar of Isfahan can be found towards the southwest wing of the mosque. It is a UNESCO World Heritage Site since 2012.