Treehouses can be far more than wooden platforms hidden among the branches. Around the world, people have transformed trees and forests into extraordinary homes, restaurants, offices and even entire communities. Some look almost impossible to build, while others push the limits of architecture, engineering and nature in completely unexpected ways.

From a converted aircraft suspended above a rainforest to secret cabins, floating spheres and centuries-old structures built inside living trees, this countdown explores 15 of the world’s most incredible treehouses. Some are spectacular, some are bizarre and a few have stories that are almost as unbelievable as the structures themselves. But which one deserves the number one spot? For more content like this one follow us also on Facebook!