Lord Shiva in His Arthanareeswara form graces the devotees facing west.  There are 24 temples around this temple.  They are, Tiruparayar Ramar, Serpu Bhagawathi (Bhoomadevi), Ooragathamma Tiruvadi (Mahalakshmi), Aarattupuzha Sastha, Sathankudam Sastha, Thotipal Bhagawathi, Andhikadu Bhagawathi, Surakodu Bhagawathi, Neticherry Sastha, Matil Sastha, Ayakunnu Bhagavathi, Kadalaserry Pisarikkal, Kodanur Sastha, Nangulam Sastha, Edakunni Bhagawathi, Chackankulakarai Sastha, Thaikattucherry Bhagawathi, Chitti Chathukudam Sastha, Medankulankarai Sastha, Kalleri Sastha, Kodukari Punilarkavu Bhagawathi, Kaduppucherry Bhagawathi, Chalakudi Pisarikal Bhagawathi and Tiruvallakavu Sastha.

Also there are four Sastha temples Agamala Sastha in north, Vazhuthukavu Sastha in south, Kudiran mala Sastha in east and Edatiruthi Sastha in west covering all the four directions.

Before starting any festival in the surrounding 24 temples, the administrators of these temples come to Peruvanam temple to obtain the permission from Lord Shiva and performing the pujas here.  Mother Parvathi graces the devotees from a shrine in the east of Arthanareeswara shrine.  Lord Dakshinamurthy and Lord Ganapathy are facing south.  Lord Kosala Krishnan graces from a separate shrine.

Devotees pray for reunion of couples separated for some reason or other, for child boon, for salvation of departed souls, for removal of obstacles in wedding proposals and longevity.

The significance temple is in the Twin Shivalingas installed on the same Avudayar-peeta, hence revered as Irettayappan temple (Irattai-two).  There are Nandhis and the Balipeeta before both Shivalingas.   Sacred spring Thodukulam is behind the temple.  The Linga installed by Sage Pooru is called Mahadevar.  There is a shrine of Lord Arthanareeswara granting darshan to Sage Pooru.  What is more significant is the presence of Mother Parvathi within the Shivalinga.  The Linga is sculpted with extraordinary skill showing Mother Parvathi in the Linga explaining Shiva-Parvathi – Shiva Shakti philosophy.  This is the only temple where devotees can have the darshan of this rare Shiva-Parvathi Linga and a Linga at a higher level. 

Pooram festival is celebrated in this temple for the past 1,426 years.  The popular Trissur Pooram is celebrated for the past 200 years only. 

Sage Pooru performed intense penance here, which once was dense forest.  Pleased with his penance, Lord Shiva granted darshan to the sage in His Arthanareeswara form along with Mother Parvathi.  Lord also gave the sage a Shivalinga and also created a spring for abishek to the Linga.  The sage drew 3 lines with his fingers.  As he touched (Thodudhal in Tamil) the earth and made a spring, hence this is called Thodukulam.  Once, the sage left the Linga in the banyan tree for a bath but could not take it back when he returned.  He made 24 steps, climbed and did his worship.  After this event, 24 steps are made here to see and worship the presiding deity.  The place named Pooru Vanam after the sage, later changed as Peruvanam.