The Thrikkadavoor Mahadevar Temple is situated in Thrikkadavoor panchayath on the banks of the Ashtamudi lake. Dedicated to Lord Shiva, it is one of the famous Shiva temples in the district of Kollam. The annual Kettukazhcha (exhibition of effigies) festival of the temple held during the months of February- March December-January is a colorful event. Another major festival is the Thiruvathira utsav celebrated in the Malayam month of Kumbham. The temple, previously owned by some Nair families, is now under the administration of Travancore Devaswam board. Thrikkadavoorappa Seva Sangam, a non-profit organisation formed by the youth, functions on the temple premises and it helps the devotees during the festival season.