The world’s largest sailing boat, mega yacht “A,“ belongs to Russian billionaire Andrey Melnichenko. Its name comes from the first letter of the owner’s and his wife Alexandra’s name (you can see her in the photo next to the pool). The ”A" cost the owner more than $300 million, and it was created by the famous designer Philippe Starck. The yacht’s length is 120 meters (nearly a football and basketball field if you put them next to each other). It has 3 swimming pools, one of them with a glass bottom which is at the same time a disco ceiling on the floor below.