There are several architectural features of interest, especially the rock cut portions of this hill temple dating back to the Pandya period and the life sized sculptures in the mandapams of the Nayakar period. An Aasthaana Mandapam with several artistically carved pillars lead one to the towering 150 feet (46 m) high Rajagopuram at the entrance.
The Kambathadi Mandapam, Ardha Mandapam, and Mahamandapam are situated at different levels. The main shrine is an early rock cut temple which has cells that house the sanctums of Subramanya, Durga, Vinayakar, Shiva and Vishnu. All the statues are carved on the wall of the parankundram rock. The presiding deity lord shiva is known Parangirinathar and the female deity his consort mother Parvathy is known as Aavudai Nayaki. Panels depicting Shiva's dance of bliss are seen outside the sanctum. These magnificent works of art date back to the Pandya period.
A curious feature of this temple is that the Gods Shiva and Vishnu face each other in the main shrine, and this is a rare thing in ancient Hindu temples. This is because Hinduism always held two distinct worshipping groups - Shaivites (worshippers of Lord Shiva) and Vaishnavites (worshippers of Lord Vishnu). Outside the temple there is a beautiful pond where, according to Temple tradition, the fishes are served with salt and rice flakes by the devotees. There is also a Vedic school adjacent to the banks of the temple pond.This temple was built by carving the hill.
In front of the Dwajasthambam or the Kodi Maram, one gets the magnificently carved Nandi, Mayil and the Mouse ( the vehicle of Lord Ganesha). This is a specialty of this Murugan shrine.Going inside, one can see the sannidhis of various Hindu Gods and Hindu Goddesses. Of special mention is the sannidhi of Saneeswaran without the other eight Grahas. Climbing a flight of six steps called the "Shadashara Padigal", one reaches the Ardha Mandapam. One gets to see the rock carvings of Mahisshasura Mardini, Karpaga Vinayagar, Andarabaranar and Uggirar.
There is also a rock carved sannidhi for Lord Vishnu and Goddess Lakshmi. Shiva in the form Sivalingam and Sathiyagireeshwarar sannidhis located here cannot miss the attention of the Muruga Bakthas visiting this Murugan shrine.
The Moolavar deity is also sculptured from a rock. Abhishekams for the presiding deity is done to the Murugan's Vel only.
There are five Theerthams, or divine water sources, in and around the temple, Saravana Poigai, Lakshmi Theertham, Saniyasi Kinaru (well), Kasi Sunai, and Sathiya Koopam.