The book, "Tropical Homes of the Eastern Caribbean" explores gorgeous homes such as Mt. Hartman Bay Estate in Grenada. Fully planted roofs and rounded shapes of windows and doors are reasons why the home is compared by some to a Hobbit's House, or as locals call it, "Cave House." Designed by Richard and Rose Lee, they opted for an organic design, with no "straight lines and flat walls." The distinctive rooftop supports a whole array of plants, from cacti and agaves to various kinds of grasses.