Naein, 140 kilomete east of Isfahan is a city on the edge of the desert that is 3000 years old. The historical Jameh mosque of Naein is 1200 years old and was one of the first mosques built in Iran. You can not find similar to Historical Jameh Mosque of Naein in terms of architecture anywhere in Iran.
The naves are located on three sides of the courtyard of the mosque and have thick columns close to each other, in the shape of forty columns. The altar of this mosque has historical plaster casts from the Al-Buyeh period and its wooden pulpit belongs to seven hundred years ago. The basement or underground nave of the mosque is actually a large hand-made cave under the courtyard of the mosque.
The Historical Jameh Mosque of Naein has no dome and has only one minaret. Forty columns around the courtyard of the mosque are decorated with prominent brickwork. Remains of quadrangles from the Sassanid period can be seen in a corner of the mosque courtyard, so some believe that this mosque was built on the remains of a fire temple of the pre-Islamic period.