Main article: Sri Appakkudathaan Perumal Temple The Sri Appakkudathaan Perumal Temple, also called as Thirupper Nagar, is located on the banks of the Kaveri River, away from Kollidam.
The main deity in the sanctum is Lord Ranganatha, in a reclining pose and considered adi, meaning fore runner, to the Sri Ranganatha Swamy Temple at Srirangam.