Arunachaleswara temple, located on Arunachala hills, in Thiruvannamalai is one of the most scared Shiva temples in India. The temple is dedicated to the form of Lord Shiva known as Arunachaleswarar. It is one of the five Panchabhoota (five elements wind, water, fire, earth and space) Stalams. This temple is for fire. The other four temples are in Kalahasti (wind), Tiruvanaikka (water), Kanchipuram (Earth) and Chidambaram (Space).
The temple has majestic towers and pillars adorned with sculpted images showing the artistic excellence of the ancient periods. The walls showcase many beautiful inscriptions of successive rulers and chieftains. This temple witnesses huge inflow of pilgrims all through the year. Krithika Deepam - the light festival celebrated in the month of Krithika, Pournami – the full moon day and Thiruvoodal – the sacred quarrel are the major festivals in this temple.