Pillayarpatti is a small village situated in Sivagangai district between Pudukottai and Karaikudi. Pillayarpatti is famous for its magnificient temple of Lord Ganesh.

Vinayak, the God of Victory is the main deity here in the name Karpaga Vinayakar. This temple is the only one in TamilNadu which deserves pride for having a 6 feet rock-cut Vinayak idol. The Thumbikai of Lord Ganesh is curled towards his right side and so the God is also known as Valampuri Vinayakar. The larger inner shrine with its splendid sculptures make the people wonder on the first sight.

Besides this Ganesh image, there are many other images of deities carved out of rocks. One of them is Thiruveesar, a Siva Lingam. Other gods presiding in this temple are Marudankudi Eesar and Vaadaamalar Mangai. Every day five poojas are offered to the God.

In front of the temple is a large beautiful teppakulam(tank) and it serves the water needs of the temple devasthanam. The temple has two splendid Rajagopurams. There are many inscriptions found in this temple which tell us the history of this ancient architecture.