The aim of the project is to seek an ambiguity of architecture. The building is a single-storey, one-room roughly 2000 square meters large. This is a facility for students to come in whenever they like. Facades are all glass. There are no earthquake-resisting walls or braces whatsoever. This building relies entirely on an ensemble of slight columns of varying proportions. None of the 305 columns are identical in cross-shaped section and angle. Subtle differences in the shape of the columns are defined by their structural purpose and the role of the spaces they create. Groups of columns ambiguously divide the area to create a number of different spaces. The columns are arranged within the architecture as trees placed on a landscape, It makes a comfortable space like forest.