If you get sea sick when you see expensive out of this world pricing, look away not. In the Odeon Tower in Monaco the millionaire playground you will find the world most expensive apartment. Where else can you find an apartment going for $400 mm. Can you blame the price tag? This spacious 35,500 square foot playboy palace has the best feature money can buy. Private outdoor sky pool, terrace, water slide and a full panoramic view over the bay side. Make sure you stop by Monaco and lock up to see the high life.