"It is basically a floating city,” company director Rob McPherson told Australia's News Limited. "The design theme called for a unique yacht that reflected the style and sophistication of the principality." In other words, they threw out any notion of "less is more." Designers plan to connect the upper and lower living areas of the yacht with a grand atrium. Seven guest suites, a library, a cinema and a communal balcony will make up the lower level, while an entertainment area and the owner's three-story, 4,800-sq.-ft. suite will make up the upper level. Don't worry if that doesn't float your boat. Yacht Island Design has plans for a separate yacht that will stretch 280 feet and be based on an island in the South Pacific.
Price: $1.1-billion usd
Source: Yacht Island Design