Sri Nageswarar Temple, also know as Vada Nageswaram is an important Shiva temple near Chennai. (Though technically it is in Kanchipuram district.) It is 12 kms away from Chennai International Airport.
This is one of the important temple, as it was worshipped by Sekkizhar who wrote Periya Puranam
According to legends, Sekkizhar has built the temple as a replica of Thirunageswaram temple in Kumbakonam