Mumbai Travel Guide, India. History and Tourism. Mumbai, previously known as Bombay is one of the most populous and biggest cities of Maharashtra. Also the biggest metropolis of this state, Mumbai is also popular as the entertainment and financial capital. It is the largest city of India and fondly called as the city of dreams. It is a place filled with dreamers and people who work hard day and night to achieve their dreams. From struggling actors, laboureres, Bollywood stars to gangsters, Mumbai has a lot. A lot that can be written about and talked about! Mumbai is also home to one of the biggest slum area as well as home to the richest and thus it is only fair to describe Mumbai as a city for all. The majorsly spoken language is definitely Hindi , but this city has welcomed people from all faiths and religion warmly. If you want to know and experience diversity, visit Mumbai. This city also has its very own language that is the Bambaiiya Hindi. Known to be a city filled with warm and friendly people, we believe that anything written about Mumbai is never.