Hometravel Great Barrier Reef, Queensland, #Australia by Scott Sporleder. The Great Barrier Reef is the world's largest organically formed structure. #travel byadmin -July 24, 2015 Tags travel Facebook Twitter Share:Great Barrier Reef, Queensland, #Australia by Scott Sporleder. The Great Barrier Reef is the world's largest organically formed structure. #travel Facebook Twitter WhatsApp Pinterest LinkedIn Reddit Tumblr Telegram Email