9Antilia – Mumbai, India

Value: $2 billion

Owned by Mukesh Ambani, one of the richest men in the world, Antilia is a towering 27-story skyscraper located in Mumbai, India. This 400,000-square-foot home is designed to withstand an earthquake of magnitude 8 on the Richter scale. With luxurious amenities such as three helipads, a 168-car garage, a ballroom, and a private theater, Antilia is a true marvel of modern architecture. Each floor is uniquely designed, and the residence also includes several swimming pools, a spa, and a snow room that releases snowflakes from the ceiling.