Imam Khomeini Grand Mosque is one of the biggest cultural and religious complexes in the world. The complex consists of the pray seraglio, the Altar, the porch of martyr of the Altar, the apron and the veranda. The main usage of this complex is to held rituals, conferences, ceremonies and exhibitions. The two tallest minaret of the grand mosque was constructed by Bolandpayeh Company.
The total numbers of the minaret of Imam Khomeini grand mosque are 14.The two tallest minarets with a height of 140 meters which were constructed by Bolandpayeh, are the unique ones in the world.