Antilia is a private residence in the billionaires row of Mumbai, India. It is the residence of the Indian billionaire Mukesh Ambani and his family, who moved into it in 2012; at 27 stories, 173 metres tall, over 37,000 square metres, and with amenities such as three helipads, air traffic control, a 168-car garage, a ballroom, 9 high speed elevators, a 50-seat theatre, terrace gardens, swimming pool, spa, health centre, a temple, and a snow room that spits out snowflakes from the walls, the skyscraper-mansion is one of world's largest and most elaborate private homes. The architectural design of Antilia has been fashioned along the lines of the lotus and the sun. The top six floors of the building have been set aside as the private full-floor residential area. It is also designed to withstand a magnitude 8 earthquake.
As of 2014, it was considered the world's most expensive private residence costing between US$1 and 2 billion to build.
It is located on Altamount Road, Cumballa Hill in South Mumbai.