Coimbatore is located on the banks of the Noyyal River and is surrounded by the Western Ghats. Coimbatore is the second largest city in Tamil Nadu after Chennai in terms of population. Podanur Junction is the oldest Railway station in Coimbatore City. The city is one of the largest exporters of Jewellery, Wet grinders and Poultry. Being a hub of textile industry in South India, the city is sometimes referred to as the "Manchester of South India".