Take the city-state of Monaco, put it on a giant yacht, and you have a $1-billion vessel fit for a king, literally. Created by Yacht Island Design, this 500-foot superyacht was modeled after the city-state where billionaires go to play, and includes scaled down versions of Monaco’s most famous buildings, including the Monte Carlo Casino. If you don’t gamble, there’s also a Grand Prix go-kart course inside. Other luxuries include: multiple swimming pools, a library, cafes, spa, a basketball/tennis court that doubles as a helipad, parking spaces for smaller yachts, and even a personal submarine. It can comfortably accommodate 16 guests (includes 3800-square-foot VIP suites) and a staff of 70 to tend to their every need. Continue reading for more pictures.