Wikipedia
Thirumanikkoodam or Varadaraja Perumal Temple is located in Thirunangur, a village in the outskirts of Sirkazhi in the South Indian state of Tamil Nadu, is dedicated to the Hindu god Vishnu. Constructed in the Dravidian style of architecture, the temple is glorified in the Divya Prabandha, the early medieval Tamil canon of the Azhwar saints from the 6th–9th centuries AD. It is one of the 108 Divyadesam dedicated to Vishnu, who is worshipped as Varadharaja Perumal.
It is one among the eleven divyadesams of Thirunangur Tirupathis and is closely associated with Thirumangai Alvar. It is also the only temple in the Nangur divyadesams to have revered by an azhwar other than Thirumangai Alvar. As per Hindu legend, the temple tank for dug by Arjuna from the age of Mahabaratha. Krishna appeared as Parthasarathy to Arjuna here and initiated his education, leading to the name of the temple.
The temple is open from 8 a.m. to 10 a.m. and 5 p.m. to 7 p.m and has four daily rituals at various times of the day. The Thirumangai Azhwar Mangalasasana Utsavam celebrated annually during the Tamil month of Thai is the major festival of the temple during which the festival images of the eleven Thirunangur Tirupathis are brought on mount designed like Garuda, called Garuda Vahana, to Thirunangur. The temple follows thenkalai mode of worship.