One of the filthy rich billionaires of this world is Prince Al-Waleed from Saudi Arabia. He is a Saudi Arabian Business tycoon and investor and he is a member of the Saudi Royal family. He is worth $20billion. He is the founder, CEO and 95% owner of Kingdom Holding Company. He spends his money buying customized mega yachts, jumbo jets and what not. He built his own elegant Palace which has 317 rooms.