Aravindeswaram Thekkumbhagam Siva temple is in Onamthuruth, Kottayam. It is believed to be more than 500 years old. It used to be under the Kaippuzha Kings. When they left, they entrusted the temple to the illam. It is believed to be associated with Arjuna being blessed with the Pashupathasthram. Subordinate deities consecrated here are Ganapathy, Bhagavathy and Rakshass. The annual festival is for three days in connection with Sivrathri Dhara, Mruthyunjaya archana, Ganapathy homam, Katum payasam and all archanas are offered.