Alight here for the very famous Annamalaiyavar Temple. You can take an auto from the Railway station to reach the hill. The Karthigai Deepam festival is celebrated during the day of the full moon between November and December, and a huge beacon is lit atop the Annamalai hill.
Must do is a Pradakshina (Also called girivalam) of the hill by foot.
Pic Source: Wikipedia.