The project involves renovating the first -floor cafeteria and converting the second-floor club rooms and related facilities into conference rooms that will serve as a hub for industry-academia collaboration.　Basically, no major changes to the layout were required on either floor, and only the finishes needed to be updated. The existing building was a two-story structure characterized by a central atrium with striking light from a skylight. On the first floor, there was a one-room cafeteria with a kitchen, while the second floor consisted of rooms arranged along a square-shaped corridor surrounding the atrium. However, the corridor walls created a closed-off impression. To address this, we proposed replacing the walls with striped glass panels treated with mirrors, creating boundaries where transparency and reflection coexist, thereby achieving both a sense of visual openness and spatial segmentation. As a result, one can catch glimpses of the conference rooms or have them partially concealed, while the surrounding trees appear through the glass or are reflected in the mirror. This creates a variety of spatial experiences, such as blended visual effects, the expansion and contraction of perceived space, shifts in the sense of distance, and the transformation of scenery as one’s viewpoint changes. Through the function of mirrors, real and virtual images coexist, generating landscapes that extend beyond the adjacent spaces along their boundaries-making this a project that, in a sense, aims at the expansion of landscape itself.