treehouses

I've been thinking a little about how difficult it would be to build a tree house up in Alta, since there is obviously no shortage of trees up there. Some links:

construction
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http://www.thetreehouseguide.com/
http://walterreeves.com/how_to/article.phtml?cat=26&id=176
http://georgiafaces.caes.uga.edu/getstory.cfm?storyid=190
http://ropesandpoles.blogspot.com/2005/12/treehouse-step-by-step-main-page.html
http://www.thetreehouseguide.com/



cool examples
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http://www.palmlandtours.net/kerala/treehouse/treehouse.htm
http://cedarcreektreehouse.com/