Tiruvidavaenthai is more commonly known as Tiruvidanthai. It is on the East Coast Road, about 7-10 km from Tiruvanmiyur, Chennai. That is if my math is not too bad. The temple is one of the 108 Tirupathi's of Lord Vishnu. Its sanctum sanctorium has Lord Vishnu as Nitya Kalyana Perumal. He gives darshan as a Varaham. He holds Komalavalli Thayar on his left thigh balancing his left feet on Adiseshan. Pretty amazing! It also has a separate Sannidhi (as I am used to call it) for Komalavalli Thayar in her full bridal costume.
The story behind his name is also interesting. In Tiruvidanthai, lived a saint called Kavala Muni with his daughters. 360 of them! He prayed for the lord to marry them, and the Lord kindly obliged, marrying one each day, for a year. Thus the name Nitya Kalyana Perumal. At the end of the year, he merged all into one Komalavalli thayar.
The temple is very good and I guess is one of the temples better protected by the Archeological Survey of India. The outer walls of the sanctum are still inscribed with Tamil, clearly of the (g)olden days. Though I couldn't understand any (and I consider myself not too bad in reading Tamil). What else? There is a shed, possibly for the Ther, right after the Dwajasthampam (the flag made out of stone, if I may say so). Its actually pretty dilapidated. And there were two mandapams, one right at the outer entrance, and one to the left of the Dwajasthampan as you enter the outer entrance. To the right was more facts by ASI about the kings who ruled when it was constructed and other interesting things that I dutifuly forgot.
The temple's tank is about a five minute walk down the approach road from the temple. It is reasonably big. Honestly, I didn't have a chance to stop and look if the tank is any good. But the temple sure is very peaceful. No disrespects, but I would any day prefer Tiruvidanthai to any other Divya desam, or for that matter a temple, which may be more crowded all round the year. If only I was not this far from the temple!