Chennai - Wikipedia
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Chennai (/'tSenaI/(listen), Tamil: [’tcen:aI]), also called Madras[A] (the formal name until 1996) is the capital of Tamil Nadu, India. Chennai, the state's most populous city and largest in terms of area, is situated on the Coromandel Coast of South India. It is also the most important cultural, economic, and educational center of South India.
According to the 2011 Indian census Chennai is the sixth most populous city and fourth-most populous urban area. The Greater Chennai Corporation, India's oldest city corporation, is responsible for managing the city. It was established in 1688 and is second in the world behind London. The city of Chennai lies in coterminity with Chennai district. This, along with its surrounding suburbs, makes the Chennai Metropolitan Area [note 1] the 36th largest urban area in the United States by population  and one the most important metropolitan economies in India.
It is the traditional and most popular gateway to South India. It was ranked as the 43rd most visited city in the globe for 2015. And it was ranked 36th in the list of most visited cities in the world in 2019.  Chennai was rated the most safe city in India by the Quality of Living Survey.  Chennai is home to 45 percent of Indian health tourists and 30-40 percent of Indian health tourists. It is known as \"India's capital of health\".  Chennai, an established port of commerce of British India since 1600s, is known as \"India's health capital\". It had the third-largest population of expatriates in India at 35,000 in 2009 (82,790 in 2011) and was estimated to have over 100,000 people by 2016.  Lonely Planet, a tourist-guide publisher, named Chennai one of the top ten places in the world to see in 2015.