Well , this is about tree house. i guess i am not the only one who obsessed with tree house.
this site (above) is talking about the technique usually used in creating this type of tree structure. More on http://inhabitat.com/grow-your-own-treehouse/
This site above talks about the integration of the trees and steel structure, which shows some good ideas. More on: http://www.designboom.com/weblog/cat/9/view/7062/grow-your-own-architecture.html
This youtube video is a bit old, i guess it is the very beginning idea about “trees grows into house”. The imagination is great.
This site (above) talks about the technique that used in creating a tower like this. It is potentially to be made into eco watch tower.