Constructed in the Dravidian style of architecture, the temple is glorified in the Nalayira Divya Prabandham, the early medieval Tamil canon of the Alvar saints from the 6th–9th centuries CE.

[1] Kallalagar Temple covers an area of about 2 acres (0.81 hectares) and has a five-tiered gopuram (gateway tower).

The central shrine houses the image of the presiding deity, Sundarabahu Perumal in standing posture.

In Chithirai (April–May), Kallalagar starts from Alagar Kovil in the form of Kallar [4] and reaches Madurai on Pournami (Full Moon day).

Ethir Sevai is a part of the Chithirai Tiruvila of the Kallalagar temple at Alagar Kovil and begins on the fourth day.

As Alagar returns from Vandiyur Dhasavatharam, festival is celebrated throughout the night at Ramarayar Mandapam in the Northern part of river Vaigai.