In the most conspicuous sign yet of India’s unprecedented prosperity, the country’s richest man, Mukesh Ambani, is building a new home in the financial hub of Mumbai: a 60-storey palace with helipad, health club and six floors of car parking. The building, named Antilla after a mythical island, will have a total floor area greater than Versailles and be home for Mr Ambani, his mother, wife, three children and 600 full-time staff.

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