Chennai, formerly known as Madras, is the capital city of the Indian state of Tamil Nadu. Located on the Coromandel Coast off the Bay of Bengal, it is the largest city in Tamil Nadu and the fourth-largest city in India. Chennai is a major economic, cultural, and educational center in South India, often referred to as the "Detroit of India" due to its significant automobile industry. The city boasts a rich history, evident in its numerous temples, churches, and colonial-era buildings. It is a hub for Carnatic music and Bharatanatyam, a classical Indian dance form. Chennai's vibrant culture is complemented by its beautiful beaches, such as Marina Beach, one of the longest urban beaches in the world. The city is also a prominent healthcare destination, attracting medical tourists from across the globe. Its diverse economy includes IT, healthcare, manufacturing, and financial services, making it a significant contributor to India's GDP. Chennai is known for its warm climate, delicious South Indian cuisine, and the friendly nature of its residents.