This ancient temple for Sri Ramanaadheswarar is located in Porur, very near to Porur junction, off. Kunrathur Road.This ancient temple is connected to the Ramayana period. According to the history, Sri Rama on His way to Sri Lanka rested here in this place which was then a forest. While resting under an Amla tree (‘Nelli’ in Thamizh), He realized that there was a Shiva Lingam under the ground and his feet had touched the head of the Lingam unknowingly.
Sri Rama acquired a Dhosham as He had touched the Lingam with His feet. So he undertook a penance towards Lord Shiva for 48 days with just one Amla fruit as his food, to recover from the Dhosham and to bring out the Shiva Lingam. Lord Shiva pleased with Sri Rama’s penance came out from the earth and gave Viswaroopa Dharshan to Sri Rama.
Sri Rama overwhelmed by the Lord’s mercy named the Shiva Lingam as Sri Ramanaadheswarar and worshipped Him. Goddess Parvathi too appeared and gave Dharshan to Sri Rama as Sri Sivakaama Sundhari.
Sri Rama with sincere prayers worshipped Lord Shiva as His Guru and got to know the directions to reach the place where Sri Sita was kept under custody of Raavana and headed towards Sri Lanka.As Sri Rama worshipped Lord Shiva as His Guru, this place became a Guru Sthalam among 9 Navagraha Temples of Chennai (or Thondai Mandalam). Here Lord Shiva Himself is worshipped as Sri Guru Bhagavan.
Also this place is called Uthara Raameswaram, as Sri Rama worshipped Lord Shiva here, similar to Raameswaram. Also according to temple sources, it is said that Porur was called as Uthara Raameswaram in ancient days. It is also said that, this temple is equivalent to Raameswaram and those who are not able to go pilgrimage to Raameswaram can visit this place and be blessed by the Lord.
The main deity Sri Ramanaadheswarar is too gigantic and beautifully decorated, facing east. This huge deity is a Swayambhu Lingam (self evolved). Goddess Sivakaama Sundhari has a separate shrine in the temple.
The sanctum is built in Gajabrishta shape or Thoongaanai Maadam (தூங்கானை மாடம்) type which is popular in Chozha temple architecture. Sri Vinayagar, Sri Dhakshinamurthy and other Koshta Murthies are found around the sanctum. This temple does not have Rajagopuram at the entrance and Vimanam above the sanctum.
Nandhigeswarar is found on the outer praakaaram facing the sanctum.
Here Sri Sandigeswarar is seen in a peculiar position near Nandhi facing south.
The practice of offering Theertham and Sadaari are generally seen only in Vishnu temples. But, this is probably the only Shiva temple, where Theertham and Sadaari are offered to the devotees.
The Sthala Viruksham is Vembu (Neem tree) which is seen on the southern side of the praakaaram. Lord Brahma is seen under the tree facing north. A small Shiva Lingam is kept facing east with Nandhi, adjacent to Lord Brahma. The Neem tree is dressed up with a nice saree which looks like a beautiful woman.Pournami, Pradhosham, Sivarathri and Guru Peyarchi are celebrated well in this temple.
One can’t stop admiring the beauty of Sri Ramanaadheswarar and His magnificence at this temple.
Thirukkachur is a very small village situated about 3 kms from Singaperumal Koil. This village lies on the west side of Singaperumal Koil off the GST Road.
This is a beautiful temple which is said to be built by Kulothunga Chozha, where the main deity is Sri Oushadheeswarar (in Sanskrit ‘oushadha’ means medicine) also called Marundheeswarar and Goddess Andhaka Nivarani Ambaal (also called Sri Irul Neekki Ambaal). This temple is also called as Malai Koil by the villagers.
The entrance of this temple is facing south. There is no Rajagopuram for this temple. Soon after the entrance, there is a stone pillared Mandapam on which wonderful ancient carvings of Lingothbavar, Kamakshi, Pattinathaar, Dhandaayudhapaani etc, are seen.
It is said that this hill is rich in herbs containing very rare and precious herbs all over. 
Another unique feature of this temple is the deity Sri Marundheeswarar here is facing west. The outer praakaram is huge and has Dwajasthambha and Nandhi facing east towards the sanctum.
The people believe that the soil of this place itself is medicinal (
There is a separate shrine for Sri Andhaka Nivarani Ambaal, where She is in standing posture.
There is an ancient well at the north eastern side of this temple. This serves as the Theertham for this temple and is called 'Oushadha Theertham'. This water too is believed to have medicinal properties.
This well is made in such a way that, one can enter the well and reach up to the surface of water through the steps. This steps start at a distance from the well and goes inside the well even below the water level. It is said that there are 60 steps to this stair case. A very unique and a 'well designed well’.
The Sthala Viruksham for this temple is Palaa Maram (Jack tree).
Sundaramurthy Naayanaar, who had visited this village and composed hymns on 
Thiru Aayarpaadi is a small village located 3 kms from Ponneri, near Chennai. This village has a beautiful temple for Lord Krishna called Sri Kari Krishna Perumal, on the banks of the Aarani River. The Lord here is Swayambhu Murthy (self evolved).
The main deity Sri Kari Krishna Perumal is seen here in human form. Generally in Vishnu temples one can see the Lord with 4 hands holding Sangu (Conch) and Chakra (Wheel). But here the Lord is seen as a Yadhava (shepherd), with His right hand holding a shepherd’s whip and left hand rested on the hip. The Lord has Amrutha Kalasam (bowl containing celestial nectar) on His head.
There is an ant hill present inside the temple. Usually, we can see such ant hill only in Amman temples. But this is the only Vishnu temple which has an ant hill. The main deity is said to be evolved from this ant hill only. There is an interesting story behind this temple.
Ages back a cow belonging to a villager used to graze around in the forests here. One day the master of the cow saw the cow pouring its milk in a bush without any one actually milking it. The master who got confused went and saw the place along with the villagers. There was an ant hill amidst the bushes. They started demolishing the ant hill curiously. While digging out they saw this idol of Lord Krishna showing up. While digging further, it is said that, Lord Krishna moved his leg a bit and stood slanting to avoid being hit by the crowbar. But one of the crowbars hit Him on his shoulders. The villagers took out this beautiful idol of Lord Krishna which stood tilted, holding a whip on His hand.
Ancient Chozha king, Karikaal Chozha II has built this temple for Lord Krishna and hence the God here came to be known as Sri Kari Krishna Perumal.
Another rare feature of this place is the Shiva Vishnu meet, which is celebrated once in a year. It is said that there were 2 Rishis performing penance nearby. They planned to pray Lord Shiva and Lord Vishnu respectively and both gave dharshan to them simultaneously. Marking this occasion, a festival called Hari – Haran Sandhippu Urchavam (‘Shiva - Vishnu Meet’ festival) is celebrated annually near this temple. This is probably the only place where these 2 Gods meet.
There is a 16 pillar Mandapam outside the temple in front of the Raja Gopuram. A stone slab above these pillars form a firm ceiling for the Mandapam. All the 16 pillars are in a slanted position looking as if the whole structure is falling. But actually the whole Mandapam is brilliantly made in a tilted form, for the reason that the main deity here is standing in a tilted position. All the pillars of this Mandapam have exquisite carvings on them.
Sri Kari Krishna Perumal is worshipped here by childless couples to be blessed with a child. It is considered as Prarthana Sthalam (temple that fulfils wishes) for the childless. It is believed that Perumal fulfils their prayers.
The Sthala Viruksham (temple tree) is Magizha Maram and the Theertham here is called Santhaana Pushkarani.