One of the oldest and most popular Ganesha Temple in Tamilnadu is the Pillayarpatti Karpaga Vinayagar Temple. The temple is near Karaikudi on the Karaikudi Pudukottai Road.
The temple is a Shiva Temple with the Presiding deity being the Valampuri Vinayagar.
Vinayagar Chathurthi is the most popular festival of the temple. The temple is managed by the Nagarathar Trust and is a must visit place for both pilgrims and tourists.
A detailed write up about the Pillayarpatti Karpaga Vinaya Temple with information about how to reach the temple, places to stay, pooja kaalams can be accessed on the Tamilnad Temples portal.