This large and unusual contemporary mansion is located in Russia and it offers 22,604 square feet of living space. Constructed in 2012 out of wood, natural stone, and glass, this large mansion has a very modern feel. There are 4 bedrooms, 2 kitchens, a lounge, game room, indoor pool, central courtyard, spa, sauna, and even a staff apartment. The garage alone in this house is 6,400 square feet. Being located in Russia, I can't find the address, but you can look below for the listing.