Ardhanareeswarar temple, Tiruchengode

It is believed that Adi Kesava Perumāl, a form of Vishnu enshrined here, instructed Gowri on the Kedara Gowri Vratam, which she performed to unite with Shiva as Ardhanareeswarar. Once Lord Vishnu, Lord Brahma, Indra and sage Bhrigu went to Kailash to worship Lord Shiva. They were directed towards Lord Shiva by his Vahana, Nandhi. Everyone first had a darshan of Lord Parvathi and then proceeded to Lord Shiva. But, Sage Bhrigu directly marched to Lord Shiva. Parvathi Devi, annoyed by his act, sucked the flesh from the Sage's body to stop him proceeding, but the sage forwarded. Lord Shiva recognized this act of Parvathi and blessed Bhrigu with a third leg. After the departure of the Sage, Lord Parvathi appeased Lord Shiva about her penance. After Lord Shiva's approval, Parvathi Devi along with her crew went to a hilltop and performed the same. As a result of this penance, she demanded a will for getting a portion for her in Lord Shiva's sacred body thus granting the devotees for an integrated worship, which was granted by Lord Shiva. This led to the manifestation of half men and half women depiction Arthanaareswarar. Thus Lord Parvathi took up the left side and rest right by Lord Shiva. This signifies the creation of this manifestation.[1]

It is also believed that long ago there held a battle between Adiseshan and Vayu to prove their mighty powers. This resulted in devastating disasters and the then sages gave an idea to them. Accordingly, Adiseshan has to cling to Mount Meru with his hood and Vayu has to release him by his valour. But the former succeeded. Vayu, out of anger, stopped the air as a result all living beings fainted. Sages convinced Vayu to release his hold. By the sudden release of air by Vayu lead the top of the mountain with the head of Adisesha, thrown into earth on three places with flesh and blood and making it red and thus the name Chengodu. There is a 60 ft long snake carved on the hill, and hence the name as Nagamalai.[2] Sambandar composed the Tiruneelakandapathigam here, to help rid fellow travellers of an affliction. Saint Arunagirinathar has also composed Thirupugazh on Lord Subramanya here. Muthuswamy Deekshitar has sung of this shrine in Ardhanareeswaram in Kumudakriya.

Along the path are 60 steps called the Arubadam Padi (அறுபதாம் படி), which are considered to have special significance, and are mentioned by Arunagirināthar.

The Ucchi Pillaiyar shrine is found about 425 feet further up and is dedicated to Ganesha and to the lingam form of Shiva. On the west of it lies a stone called Varadikal, Maladi kal, or Vandhya Paatana Sikara. Couples offer worship at this shrine in the hope of being blessed with a child.

தத்வ நாற்பத் தெட்டு நாற்பத் தெட்டு மேற்றுத் திடமேவும்
தர்க்க சாத்ரத் தக்க மார்க்கச் சத்ய வாக்யப் பெருமாளே

The north facing, 84.5 ft tall Thirumalai Gopuram was built by Krishna Devarayar in 1512 and the basement (kalkarar) was built during the reign of Sadāsiva Mahārāyar. The 84.5 feet tall Majestic Rajagopuram of this hill temple faces north and its five stages contain fine pieces of embossed figures.

Tiruchengode, one of the most important religious places in South India, is said to have 108 Theerthangal or water bodies.

Of these, the Ammaiyappar Theertham is the most important one, as it is found at the feet of Lord Arthanareeswarar.

Girivalam is the practice of circumambulating the sacred hill by foot, which is performed by large crowds on full-moon days. The route around the hill is about 7 km long and takes about 1.5 hours to cover the distance.