Mumbai is the main international gateway to India, with far more flights than Delhi, Kolkata or Chennai. It also has the busiest network of domestic flights. Long-distance buses depart from the state road transport terminal opposite Mumbai's Central railway station. The state bus companies of other states all have offices here. Two railway systems operate out of Mumbai.
Trains travel frequently between Mumbai and other major Indian cities.
Mumbai has one of the best public bus systems of any major Indian city. There's also an extensive system of suburban electric trains. Every visitor to Mumbai comes to look at the exaggerated colonial marker known as the Gateway of India, a yellow basalt arch of triumph officially 'opened' in 1924. It was redundant just 24 years later when the last British regiment ceremoniously departed India from here, and it has become even more of an anachronism as passenger liner services to Mumbai have dried up. It stands on the wonderfully named Apollo Bunder, like a disused back door, and apart from its obligatory roll in the Mumbai snapshot, it's utilised by a colourful crowd of touts, balloon sellers, postcard vendors and snake charmers who give it the hubbub of a bazaar.