Each treehouse is presented with breathtaking exterior and interior photography, giving readers an in-depth glimpse of this rapidly evolving symbiosis between nature and shelter, indoor and outdoor, and rustic and polished, in a definitive examination of tree-house living. For people interested in eco-friendly living, this book presents the most innovative inter-pretations of the genre, from a house nestled in the tree trunks of Norway to a hexagon-shaped shelter in Mystic, Connecticut.