It's described by the Wood Works people:
Each year, Japan’s LIXIL JS Foundation holds a university design competition focused on sustainable housing technologies. The 2014 theme was Productive Garden and the winning project, Nest We Grow, has since been constructed at the foundation’s Memu Meadows Farm. Described by the WoodWorks jury as an “intelligent structure,” Nest includes a skin of translucent polycarbonate over a glulam frame. The ground floor grid is comprised of nine composite columns, which are notched to receive the beams and girders, and connected with steel plates.