Terunobu Fujimori’s fantastical Teahouse Tetsu (shown), which puts visitors in the midst of an incredible cherry blossom grove, is just one of several treehouses featured in Taschen’s recent Tree Houses. Fairy Tale Castles in the Air. The book collects a range of the dwellings – from the architectural wonders, to the cozy and handcrafted. A minimalist, clean wood space in Japan cohabits the book with a rustic, ramshackle spot in the Netherlands. All are inviting in their own way, fulfilling the childhood dream of living in the trees.