Chennai, also known as Madras, 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. With an estimated population of 6.90 million, the 367-year-old city is the 31st largest metropolitan area in the world. The city is a large commercial and industrial centre, and is known for its cultural heritage and temple architecture. The city is the automobile capital of India, with around forty percent of the automobile industry having a base there. The 12 kilometre long Marina Beach forms the city's east coast and is one of the longest beaches in the world. The city is also known for its sport venues and hosts India's only ATP tennis event, the Chennai Open.
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