Antilia is the 27-story residential building in Mumbai owned by Mukesh Ambani, the chairman of Reliance Industries. It is one of the most expensive homes in the world, with unique designs for each floor featuring rare materials like crystal, marble, and mother of pearl. The home has numerous luxury amenities, including a six-floor garage that can hold 168 cars, three helipads, a health spa, swimming pools, yoga studio, ballroom, and movie theater. It takes a staff of 600 people to maintain the home, which uses extensive energy to power its amenities while still emphasizing energy efficiency through design features like hanging gardens.