The east gopuram (tower) with 3 tiers is the main entrance to the temple. Inside the main entrance there is broad inner courtyard on all the four sides of the main shrine. Entering the inner mandapam, the main sanctum sanctorum of Lord Shiva is situated. The sanctum is semi-circular in shape at the back. This type of architecture is called Gaja Brishta Vimana or Thoonganai Maadam in Tamil as this resembles the back of a sleeping elephant. The main deity is known as Tiruvalleeswarar and He is facing east and to the right is the shrine for the female deity Jagathambikai.
Planet Jupiter incurred a curse of Menaka, wife of his elder brother. As advised by Rishi Markandeya, he reached this place, had a dip in the sacred spring and worshipped Lord Shiva and gained relief from the curse. It is the faith of the devotees that praying to Jupiter in this temple would be an effective remedy for relief from sins. According to history, Lord Vinayaka married Kamali and Valli, daughters of Lord Brahmma. Thi is supported by the procession idol of Lord Vinayaka in this wedding form. The temple assumes more importance as it is situated around 11 sacred places as a garland. It is the staunch faith of the devotees that a visit and worship in the temple would benefit them with total salvation. Jupiter shrine in the prakara is facing Lord Shiva’s shrine with another shrine for Sri Anjaneya in a worshipping form.Lord Shiva is entitled for all pujas. He is praised as Bali (puja) Thayer (entitled) – Bali Thayer.