This temple at Ramamangalam, in Ernakulam district is one of the few temples in Kerala escribed as Perum Thrukovil and also one of the five Maha Kshethras. It is the magnificent structure that constitute the temple premises that makes a temple a Perum Thrukovil. In the two storeyed round sanctum, Balanarasimham is consecrated. The temple was constructed by Cheraman Perumal, the second ruler of the Chera dynasty. According to Bhagavatha, Lord Maha Vishnu took incarnation as Narasimha in order to save his devotee Prahlada, who was about to be killed by Hiranyakashipu, his father. The fierce form of Narasimha killed Hiranyakashipu but his anger was more not brought down. At the request of the Devas, Prahlada himself approached him. Seeing the boy, Narasimha calmed down and blessed him. It is the Narasimha at this stage that has been consecrated at this temple. Another unique feature of this temple is the presence of Unnibhootham. It is believed that it was Cheraman Perumal who built the temple that consecrated Unnibhootham also. According to legends, while the consecration of Balanarasimham was going on, the brahmin priests could not allow the King who was a Kshathriya to enter the sanctum. But they needed the support of the King. So, one leaf of the Darbha grass that was touching the idol was brought out of the sanctum through the hole meant for taking the water out. The King sat near the hole and participated in the consecration process. But it was learned that one of the brahmins, who felt that a non-brahmin taking part in the consecration process even by touching the end of the grass was not to be allowed, had kept the other end away from the idol. When the King came to know about it, he consecrated the value that he had acquired through his spiritual actions on the statue that was supporting the outlet for water and left the village in sorrow. As the King was a devotee of Lord Siva, this is seen as Unni Bhootha, one of the retinues of Lord Siva. Devotees see this consecration as one that blesses children. There is also a special offering to Unni Bhootham in which coconuts are broken at the steps of the sanctum and children are allowed to gather the pieces of the broken coconut. Bhagavathy, Shasthaa and Nagas are consecrated as sub deities.