Chennai formerly known as Madras pronunciation is the capital of the state of Tamil Nadu and is India's fourth largest metropolitan city. It is located on the Coromandel Coast of the Bay of Bengal. Chennai is the third largest commercial and industrial centre in India, and is known for its cultural heritage and temple architecture. It is also a hub for south Indian classical music and dance performances. Chennai is considered the automobile capital of India, with a major percentage of the automobile industry having a base here and a major portion of the nation's vehicles being produced here. This has led to Chennai being referred to as the Detroit of South Asia.