Invisible Treehouse

http://green.yahoo.com/blog/guest_bloggers/56/almost-invisible-mirrored-tree-house-built-in-sweden.html

I really want to see this tree house in person. It reminds me of Dan Graham's work which I love because of his use of reflective materials. Mirrors create the illusion of depth, of three-dimensional space, on a two-dimensional surface just as drawing does. (Below is one of Dan Graham's pieces).