Lord Shiva in the temple is a swayambumurthy facing east blessing devotees.The Kalyanasundareswarar Temple is a Hindu temple located at Thiruvelvikudi in the Kuthalam taluk of Nagapattinam district of Tamil Nadu, India. It is dedicated to Shiva. This is the 77th Devaram Paadal Petra Shiva Sthalam and 23rd sthalam on the north side of river Kaveri praised in Thevaram hymns.
Mother Parvathi was born to Sage Bharatha in Kuthalam near Tiruvelvikudi. She performed penance for 16 Mondays on Lord Shiva to have His hand as Her Lord. Mother made a Linga of sand for the penance. On the 17th Monday, Lord appeared before Parvathi as Manavaleswarar and promised to marry Her. Accordingly, the rituals were conducted with Brahmma being the head priest for this divine marriage. Hence, the place is named Tiru Velvikudi. No poet can describe the beauty of smiling mother in the temple. Lord Shiva blesses all men and women granting their wedding boon.