The Thiruvidaimarudur Temple main entrance is located on its eastern side and has three archways with beautifully sculpted statues of various Hindu deities and characters on its outer walls. To the right side of this entrance is a shrine for Agni, the fire god. It also houses shrines for Lord Shiva as Dakshinamoorthy (seated on a serpent) and Lord Vishnu as Surya Narayana (with his wife Lakshmi). Inside the eastern entrance is the shrine for Lord Ganesha. It is believed that worshipping here will appease Ganesh and remove obstacles in one's life. This hall also houses shrines for Mahalakshmi, Yoga Narasimha, Ardhanarishwara (Shiva with his consort Parvati) and Nataraja. The next hall has a spacious rectangular mandapam, which is surrounded by many shrines. The floor of this hall is decorated with colourful patterns and the temple's main deity Shiva appears in an impressive form here.