The hall of thousand pillars the biggest mandapam inside the holy temple complex. This turned into constructed through Ariyanatha Mudaliyar, minister and commander of Viswanatha Naicker within the year 1569. This Mandapam has a complete of 985pillars. These pillars have been so organized that from some thing attitude one appears from inside, the pillars look in rows and rows. At the centre of the mandapam is the idol of Chira Sabha of Lord Natarajar. There is an idol of a hero on a horse at the doorway to the Mandapam going through south.
Legend has it that this is an idol of Ariyanatha Mudaliyar who constructed the mandapam. But this is a sacred idol of Lord Sundareswarar who on behalf of Saint Manickavasagar converted foxes into horses. To east of the idol of the deity on the horseback, are sculptures of Kannapar, Lord Siva destroying an asura and Pichadanar. At the jap entrance there are statues of a hero on a horseback, Harichandra, gypsy guy and woman with a baby in hands, woman. Carved on eight pillars next to the doorway are statues of Thiripurandhakar, Nirutha Ganapathy with an urn containing ambrosia, Lord Muruga on peacock, Nagaraja, Saraswathy, Hunter, as well as that of Dwarapalakars.