I love when treehouses are good integrated with the tree.
This treehouse it’s so amazing, a sort of Villa supported just by a tree.
Of course for a construction like this one, you need a sub-construction and this means that you have to fix it on the tree’s trunk, and I have to admit that I’m not a real fan of this kind of solutions!
If you can always try to find solutions that don’t imply to cut or drill the tree. The tree will lose its strength if you do it! 😉