We have a thing for tree houses here at Apartment Therapy, and when I came across this project by Tezuka Architects, I knew I had to share. Built around a Zelkova tree, this annex is adjacent to an elementary school in Tokyo. Inside there are two main levels, each with a classroom where language classes are taught, and the building also serves as a play area when the kids are waiting for their buses after school.
Only half of the of the building is enclosed, so during warm months and nice days, students and faculty can utilize the open, outdoor space. Nooks and crannies were made purposely small, intended only for children, and you won't find a piece of furniture in the place. The intention of the project was to create an open space that encourages creativity.
If only this existed when I was a kid. Definitely trumps my tree houses for one, and my garage forts made from old sheets.
(Images: Tezuka Architects)