Takasugi-an, which literally means “the teahouse [built] too high,” is more like a tree house than a teahouse. Fujimori says that his teahouse got higher and higher as he thought about the design of it for more than 2 years. To reach the room, one must first climb up a freestanding ladder propped up against one of the two, load-bearing chestnut trees. The tree were cut and removed from a nearby forest, and placed deep into the holes in the ground to withhold the weight. Shoes must be taken off on a landing halfway up, and after climbing another ladder on barefoot, one finally reaches the room itself.
The renowned architectural historian Terunobu Fujimori observes that a teahouse is “the ultimate personal architecture.” Its extreme compactness, which at times would consist of only four and a half tatami mats (which is about 2.7 square metres of floor space each), makes it feel “more like a piece of clothing.”