Bhutan is known as the Land of Happiness due to its unique natural beauty, cultural richness and a commitment to well being, and here are few of the reasons which makes Bhutan one of the happiest countries in the world. 1 Carbon Negative - Bhutan has more trees than people, making it a carbon-negative country dedicated to environmental sustainability. 2 Gross National Happiness (GNH) - Bhutan prioritizes the happiness and well-being of its citizens over economic growth through its GNH framework.