The temple is built in the North Inidan style of architecture, with high spires The soft stone of which it was constructed has lent its pliable surface to a rare degree of detailed work, of which the frieze figures on the upper portion is the most striking with the stone roof of the temple being intricately carved also. Encircling the shrine are verandahs with columns which are carved in circles, polygons and squares. The temple also houses the shrines of Panchamuga Ganesha, and Annapoorani which are considered very auspicious by the devotees. Omkareshwar, the sacred island, shaped like the holiest of all Hindu symbols, "Om", has drawn hundreds of generations of pilgrims. Here, at the confluence of the rivers Narmada and Kaveri, the devout have gathered to kneel before the Jyotirlinga at the temple of Shri Omkar Mandhata. Mahmud of Ghazni had invaded and severely damaged the temples at Omkareshwar in the 11th century. Peshwa Baji Rao II had to build a new one as the earlier ones were mutilated beyond repair.
Significance:Mandhata was a great Emperor of the Ishvaku clan who ruled this land. He did great penance in this land.It is said that once, sage Naradar during his visit to the Vindyas, sang the praise of mount Meru to Mount Vindhya. On hearing this, Mount Vindhya prayed to Lord Siva to gain importance. Lord Siva blessed him and appeared here as Omkareshwarar & Amaleshwarar and gave him the boon of growing, but without hindering Siva devotees. But the Vindhyas did not stop growing, and even obstructed the sun and the moon. Sage Agasthyar subdued its growth by saying it should not grow till he gets back there. He never went back & hence the growth was arrested.