They say, "Home is where the heart is," but when you're a billionaire, home is wherever…and whatever you want it to be. This week, The Filthy Rich Guide takes you on a tour of the biggest, most luxurious homes on land and sea, as we explore "Billion Dollar Listings." Ever feel like you needed more bathrooms? Junk Bond King Ira Rennert owns a 66,000 square foot Hampton's home with 29 bedrooms and 39 bathrooms. Prefer something a little larger? Indian billionaire, Mukesh Ambani owns the world's largest home. It is 27 stories high, 400,000 square feet and is valued at $1 billion. Reportedly, it takes a staff of 600 just to maintain the home. Source: CNBC