When Lord Sri Rama took Sita to Ayodhya, Mother thought that She has come to this place and Her Lord Rama was in Her eyes, hence the place has the name Raghavapuri.  To support the stay of Sage Valmiki here, there is an anthill in the prakara of the temple.  Lord Kurungaleeswarar, worshipped by Lava-Kucha is nearby.  Those suffering from the wrath of ancestors are advised to worship both Lord Shiva and Lord Vishnu in the temple, bathe in the Kuchalava theertha, perform pujas and Tarpan for the ancestors. The name of the place Koyambedu is derived from the story that Lava-Kuchas tied the Ko, the horse of Sri Rama with Ayam (iron) fence – Ko-Ayam-pedu.  Ayam is iron and Pedu the fence.  Saint Arunagiriar has described this place as Kosai Nagar in his Tirupugazh.

Married women pray to Lord for children of knowledge and wisdom.  Those who had committed wrongs knowingly get relief from such sins.  Unmarried women pray on Tuesdays with a Mangal Sutra tied to the Parvathi Swayamva tree.  People develop the quality of sacrifice, tolerance and selflessness assuring family prosperity when they worship in this temple where Mother Sita stayed.

Sage Vikasana, author of Vaikanasa puja codes has an illustrious place in the prakara.  A Neem tree is embracing with two Vilwa trees in the temple complex, named Parvathi Swayamvara Vruksha.  They symbolize Lord Shiva, Lord Vishnu and Mother Parvathi.

Lord Rama does not appear in His Royal robe but in stark a dress made of plant stems and leaves, a rare form.  Sri Lakshmana and Sri Anjaneya are seen with Lord Rama in Vishnu temples.  Here only Rama and Sita are in the temple.  Later, a temple was built for Sri Anjaneya on the banks of Lava-Kucha theertha.

While Lord in Vaikunda appears in sitting form, here, the darshan of the Lord is in a standing form with Mothers Sridevi and Bhoodevi.  Sage Valmiki appears in a pillar sculpture with Lava and Kucha and Mother Sita in the front mandap.  Daily pujas are performed to sage Valmiki.  Procession deity appears inviting the devotees by His left hand and blesses with the right.  As He is all graceful to the Devotees, He is called Bhaktavatsala – blessing the devotees.  It is believed that the tower of the temple is as the shadow of the Lord, hence called Chaya Vimana-Shadow Vimana.

After ascending the throne in Ayodhya, Sri Rama came to know that some of his subjects spoke ill of Sita’s fidelity and immediately ordered Her to be sent to forests though she was pregnant.  Mother was taken care of by Sage Valmiki where She gave birth to the twins Lava and Kucha.

During this period, Lord Sri Rama conducted the Aswametha Yaga.  The Horse dedicated for the Yaga came to Lava-Kucha’s place.  They captured the Horse.  Satrugna, youngest brother of Lord Rama demanded the boys to release the horse.  They refused.  In the war that followed, the boys defeated Satrugna.  Even Lakshmana, who came then to release the horse was also defeated by Lava and Kucha.  Surprised Lord Rama sent a messenger to the forest to invite Sage Valmiki, Sita and the boys.  Sita was too happy to See Her Lord again.

Sage Valmiki explained the story to the boys that Lord Rama was their father and the circumstances that caused the separation.  Sage Valmiki begged the pardon of Rama for his disciple boys.  Lord Rama granted darshan to the sage as Vaikundavasa.  As requested by the Sage, Lord stayed in this place as Vaikundavasa in this place.