The Poornathrayeesa temple at Tripunithura, (about 6 km from Kochi) is architecturally unique, as is the legend behind it. The temple is believed to have been established by Arjuan in Dwapara Age, some 5000 years back. Vishnu is worshipped in the temple on the Sesha Naga while sitting upright, unlike in the reclining position as in Srirangam (Trichy) or in Padmanavaswamy Temple (Trivandrum).
The temple stands testimony to Vishnu's giving life to ten still born children. In a way it demonstrates parents' immense love of children and their unlimited capacity to pray for the wellbeing of their progeny. The temple made of wood and stones and gives a pristine and ancient look.
Though the temple is dedicated to Vishnu, the main characters are Arjuna, Krishna and the Brahmin whose ten children were still born. Vishnu restored the life of ten of the Brahmin's children and is prayed here for granting children to childless couples.