Thirunageshwaram temple is devoted to the planet Rahu, the ascending node of Moon. Rahu is described as a snake. The idol in this renowned temple is in the human form with serpent image at the back. The prime idol of Rahu is seen with his consort. The main deity is Lord Shiva. There is an attractive Parvathi shrine as well.
The legends say that a saint who was affected by the bad influence of Rahu prayed to Lord Shiva to eradicate the wrong influence of Rahu at this place. Lord Shiva blessed the saint as per his his desire at Thirunageswaram.
Rahu can create difficulties and obstructions in life. By worshipping Rahu at this temple, one can come out of such miseries. The prime offering at this place is abishekam performed during Rahu’s time (Rahu Kalam).