This is a big temple covering an area measuring 5 acres with a 7 tier Rajagopuram-main tower.  Lord Valampuri Vinayaka, Lord Vishnu, Lord Muruga, Sahasralingam, Lord Meenakashi Sundareswar, Bhairava, Sun and Padaleswarar have their shrines in inner corridor.  Nandi is big in size facing east.

As Lord Shiva is named Vilwanatheswarar, Vilwa leaves are offered as Prasad.  Consuming the Prasad, according to faith, relieves devotees from dullness and skin problems and ensures child boon and wisdom.

Valam in Tamil means circumambulation.  This is the place where Lord Vinayaka established the truth that ‘world’ means Father and Mother and ‘Father and Mother’ mean world.  He went around his divine parents to show this truth.  As He did the Valam here, the place came to known as Tiruvalam and changed as Tiruvallam.  Lord Vinayaka got the mango fruit from Lord Shiva this way and is praised as Kani (fruit) Vangia (getting) Pillayar (Vinayaka).  He is sitting on His mouse vehicle.  He came to this temple with the Mango fruit – the wisdom fruit.

Saint Arunagiriar has sung in praise of Lord Muruga of the temple in his Tirupugazh.  There is a tub-like structure on the right of Lord’s shrine filled with water in which Lord Jalakandeswara graces in the name of Padalalingeswara.  Pujas are performed to Him praying for rain.

This is one the 274 Shiva temples praised in Thevaram hymns.

The monument of Sage Sanaka, disciple of Lord Dakshinamurthy is between Nandhi and Lord Vilwanatheswara shrine.  It is believed that meditating here relieves the devotee from sins of his/her past birth.  Also Saint Sivananda Mauna Guru Swamigal performed penance here sitting under the jack tree in the temple.  There is a mutt for him near the temple.  Special pujas are performed to the Swayambulingas in the Kanjan hill on all full moon days.  The event of Lord granting salvation to Kanjan at the eight places where his limbs fell is celebrated on the third day of Pongal festival. 

A priest living in Tiruvallam was fetching water from Kanjan Hills for Lord’s abishek.  Demon Kanja was giving him all troubles on the way.  Responding to the prayer of the priest, Lord Shiva directed Nandhi to control the demon.  Nandhi tore the demon into eight pieces.  But, with his deathless boon from Lord Shiva, the demon escaped.  Nandhi is facing the entrance of the temple (not facing the Lord according to tradition) to prevent the demon entering the place and the temple.