Piaçabuçu Islands, Brazil
For $79,500 you can become the owner of not one, but 6 picturesque islands located in northeastern Brazil on San Francisco River. Owning these unique islands in the most biodiverse place on the planet sounds like a dream, right? But nobody wants them. Apparently, there is a catch: you are not buying the islands, just the right to use them for 99 years, while you have to pay some vague yearly taxes.