Mukesh Ambani- Nita Ambanis Dream house, one of the richest couple of India, is the owner of multi-million dollar home, Antilia. Antilia is located in Mumbai and the first billion dollar home of the world. Antilia is a twenty-seven floor (560 ft or 173 m) largest building and it covered about 400,000 square feet. Construction of Antilla was started by the Melbourne-based construction company Leighton Holdings but another company has finished the construction of Antilia. The Hanging Gardens of Babylon inspires Mukesh to construct Antilia. Cost of Antilia is expected to $2 billion (£630m).