India's largest city is Mumbai, which has a population of over 18 million people. It is the capital of the state of Maharashtra and is located on the west coast of India. It is one of the most populous cities in the world and is known for its vibrant culture, nightlife, and financial hub. Mumbai is home to some of India's most iconic landmarks, such as the Gateway of India and the Chhatrapati Shivaji Maharaj Terminus.