Tirunelveli is a large and ancient city in southern Tamil Nadu, which became a City Corporation in 1994 by the merging of the municipalities of Tirunelveli city, Palayamkottai, Melapalayam and a few other Panchayat areas[1]. It is the district headquarters of Tirunelveli district. Tirunelveli is the home of the first largest Shiva Temple in Tamil Nadu, the Nellaiappar Temple. The city is considered to be one of the oldest in the Indian subcontinent, with a history that dates back to 1000 BC. It is located on the west bank of the perennial Thamirabarani river, whereas its twin city Palayamkottai, is located on the East bank. Tirunelveli is also often called the "Halwa City" for its reputed confectionery, the Halwa.