Instead of a treehouse, build a DIY tree fort. I love this because I've always wanted a tree house but they're kind of suspect.
How To Build A Treehouse ? This Tree House Design Ideas For Adult and Kids, Simple and easy. can also be used as a place (to live in), Amazing Tiny treehouse kids, Architecture Modern Luxury treehouse interior cozy Backyard Small treehouse masters
To heck with the Boy Scouts. I want to live here! mithun erects the sustainability tree house in the dense forest of west virginia - designboom