This ancient temple is situated at Amarambalam in Nilambur of Malappuram district. The name signifies that it is the Temple of Amaras, Rishis who do not die. There is also the opinion that the name refers to the temple that will never be destroyed. However, the unique feature of the name is that the name of the temple has also been given to the panchayath. The temple is believed to have been built by the entourage of Lord Siva in one night. The structure is reminiscent of the architecture of the time of the Kulasekhara dynasty. So, it must have been built in the more 15th or 16th century. The sculptures and carvings on the wall of the sanctum are remarkable. One special feature of this temple is that the square sanctum faces the west while there is a river, Kuthirapuzha, flowing on the eastern side. Devotees consider the river to be sacred like the Ganga. The water from the river is used for anointing the Lord. The temple formerly belonged to the Kitangazhi mana. After the raid by the army of Tippu Sultan some Nair families took over the temple. Three hundred years ago the forefathers of the Amarambalam royal family took it from them. Later a committee of the local people took over the management with the support of the Palace. Apart from Lord Parameswara, the effulgence of Shankaranarayanamoorthy and that of Narasimha Moorthy are also there. Ganapathy, Brahmarakshas, Bhagavathy and Ayyappa are the subordinate deities. Many people offer ablutions to the ancestors here. Devotees see the power of the Lord in the rock on the river and offer ablutions to the ancestors in the river. People believe that there were many temples here at one time. Today Subrahmanya temple and Vilwath Siva temple still exist.