The biggest and most expensive house in the world is a 105,000 square foot modern masterpiece in Bel Air created by developer and visionary Nile Niami. The property features a nightclub, fifty car garage, AMC style theatre, bowling alley, five swimming pools and sits on a plot of land at the top of Bel Air the size of a city block. Join us as we tour the world’s biggest and most expensive house in this exclusive video.