Behold the ultimate tree house! What: “The Patient Gardener” project using ten Japanese cherry trees Where: School campus in Milan, Italy Who: Designed by Swedish architects Visiondivision Why: A two-story “treehouse” study retreat for students. The vision: a green environmental project where construction works with the timeframe nature sets. The trees are bent and pruned into shape. When: In other words, the project will be done in about 60 years.