The Viswaroopa (Universal size figure) of Vishnu shown to Arjuna at the time of the Kurukshetra war after giving the famous 'Geethopadesh' (advice of Geetha) is the style of deity Parthasarathy in this temple. It is believed this temple was installed by Arjuna at Nilakkal Narayanapuram and later brought here by tieing six bamboo sticks and thus the name came to Aranmula (Aran-with six, Mula-bamboo sticks) Among the 108 Thirupathy temples 'Thiruvaranmulai' is one with 4 gates on the sacred Pamba riverside at Aranmulai Panchayath in Pathanamthitta District. The shrine is round facing east with the deity of more Parthasarathy six feet in height. Daily five poojas and three thanthriks, Paramboor, Tharayil Kuzhikattu and Thekkedath Kuzhikattu. Sub-dities are Sastha, Yakshi, Nagaraja (Snake King) and Erangavil Bhagavathy Balarama also is there in a lower shrine. 10-day festival as Thiruvonam Arattu (Holy bathing) during the month of Makaram. The famous Uthrattathi Boat Festival is conducted here. Another famous product is 'Aranmula Mirror' was formed from this temple. The king wished to offer a crown with a rare metal which was not available anywhere and this found a rare combination of copper lead and some other sacred mixtures. The golden dress offered to Ayyappa of Sabarimala by the Travancore king is always kept in this temple. Now ruled by Travancore Devaswom Board. This temple is also famous for its fine murals. On the last day of the Onam festival, the famed Aranmula boat race is held. Vijnana Kairali at Aranmula is an institute that imparts training in classical arts like Kathakali and classical music.