Nellai, also known as Tirunelveli, is a city in the southern part of India, located in the state of Tamil Nadu. It is known for its rich cultural heritage and historical significance. The city is famous for its temples, particularly the Nellaiappar Temple, which attracts many visitors and pilgrims. The economy of Nellai is primarily based on agriculture, with crops like paddy, sugarcane, and cotton being widely cultivated. Additionally, the region is known for its unique sweet called Tirunelveli halwa, which is a popular delicacy. Nellai also serves as an important educational and commercial hub in the area.