Mumbai, which is a total of 440 sq km, was once a group of seven islands, on the Arabian Sea, in the state of Maharashtra, mainly occupied by fisherfolk. Today, over a period of several hundred years, the city has grown by a series of land reclamations which now link the original islands into one mass.
One-fourth of Mumbai lies below sea level. It is covered by two ridges of low hills -- one on the East and West of Colaba, and the other ending at Malabar Hill, Mumbai's highest point. In between these two ridges is the busy area of fort.
The two main railway stations CST and Churchgate, the Indian Government Mint, the Reserve Bank of India, the General Post Office, the Bombay Stock Exchange, etc., are all located here.
Nariman Point, known as India’s Manhattan, is also situated in the South of the city . To the north of the city are the two Airports, the International and the other Domestic.
The northern side of the city, better known as the suburbs, were developed mainly as residential localities. Of late, however, the famous BKC in Bandra and the Andheri area have grown into commercially sound options due to the proximity to the airports. Bollywood, the largest motion picture Industry in the world is in and around the suburbs of Juhu and Andheri.