This beautiful tree house designed by Safdie Rabines sits high above the ground in the trees of Mission Hills, San Diego.
The Lomac family treehouse in Mission Hills, San Diego is built in the trees and on the edge of a canyon. Safdie Rabines is dedicated to producing site-specific architecture that is both socially responsible and environmentally sustainable. I'd say that this home does a great job of getting at the meaning of site-specific. Unfortunately, no further details area available about the home, but more photos can be viewed here.
(Images: Safdie Rabines)