Mumbai, formerly known as Bombay, is the most populous city in India and the fourth most populous in the world, with a metropolitan population exceeding 21 million inhabitants. Located on the west coast of the country, in the state of Maharashtra, Mumbai is an important natural port and the economic, cultural and financial center of India. The city stands out for its unique mix of modern skyscrapers and shanty towns, reflecting both the economic strength and the social challenges it faces. It is the birthplace of Bollywood, the world's largest film industry, and is home to India's oldest stock exchange, as well as being home to key banks and corporations. Mumbai is known for its cultural diversity, a result of internal and regional immigration, and for its British colonial history visible in its architecture. Its name comes from the local goddess Mumba, a form of Parvati, and it was officially restored in 1995 after being called Bombay during colonial times. This vibrant and dynamic city is a symbol of the growth and complexity of contemporary India.