Most other airports in India are owned by the government and operated by the Airports Authority of India (AAI), including two other high-traffic airports, Chennai (Madras) and Kolkata (Calcutta).

FORBES: India's Airport Boom Embraces Green Building

The capital of the state of Karnataka, home to Wipro and Infosys among others, has changed its name to Bengalooru, following the lead set by Mumbai (Bombay), Kolkata (Calcutta) and Chennai (Madras).

ECONOMIST: The politics of English in India's IT capital

Until a few years ago, most of the big English papers had an understanding to stay off each other's turf: the Times in Mumbai, Hindustan Times in Delhi, Telegraph in Kolkata (Calcutta) and the Hindu in Chennai (Madras).

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The twice-daily service from Dhaka to Agartala, the capital of the Indian state of Tripura, enables Indians living in the inaccessible far east of the country to go overland to Kolkata (formerly Calcutta) or Delhi via Bangladesh.

ECONOMIST: The taxing new route to Kolkata