Since I was a kid, I have daydreamed about living in an elaborate tree house, so I was excited to read about this... 3 German architects are making buildings out of living trees. These go beyond tree houses-- the trees become the buildings. Read all about it and see photos of their projects and process here:
In somewhat related news, in Pittsburgh this September, One PNC Plaza is going to have a "living wall"-- a vertical garden growing on the side of the skyscraper. That will be a nice addition to our cityscape!