7. 10 Owned by House of Saud
Billionaires have multiple properties in their name and most of these are bought at investments. Obviously, it is impossible for one to stay in all the houses because of which most of the mansions are left behind to decay and rot due to low maintenance. The picture clearly illustrates the poor state of a beautiful mansion that was once a well-appointed room. Although the house is falling apart, the walls decaying due to dampness and the roof falling down, we can see the beautiful crystal chandelier hanging from the roof, still adding elegance to the room. The only things that are in good condition in the room are the chandelier and the swag curtains.