1. Leonardo DiCaprio
He purchased his beautiful island in 2005, for a reported $1.75 million. The island is located between Belize and Ambergris Caye, boasts 104 acres, and is right by the famous Barrier Reef. The star, who is passionate about the environment, plans to turn it into a prime example of sustainable development. Luckily for us, DiCaprio even plans to open up his island to the public.