Outlandia by Malcolm Fraser Architects
Takasugi-an, which literally means, “a teahouse [built] too high,” is indeed more like a tree house than a teahouse. In order to reach the room, the guests must climb up the freestanding ladders propped up against one of the two chestnut trees supporting the whole structure. The trees were cut and brought in from the nearby mountain to the site.
Takasugi-an by Terunobu Fujimori