4) Blackadore Cay, Belize
Owner: Leonardo Di Caprio – Net worth: $200 million +
Leonardo Di Caprio is also an American Actor, known for his performance in award-winning movies like Titanic, which went into history as one of the greatest to have ever being made. This 104-acre retreat was bought for a reported price of $1.75M million by the actor-producer. Just like his fellow actor Johnny Depp, Leonardo has also taken a step in the direction of making his island eco-friendly with his plans to use solar power to meet energy needs of the island, including his plans to build an eco-resort on the island.