Our objective was to extend various pedestrian movement from the sloped street and traffic center to deep inside the building. As a result, the building's exterior reveals outer stairs at the street level, spanning directly from the upper floors straight to the rooftop, where pedestrians can interact with people on the street as well as inside building. These expanded views traverse the citywide to the symbolic and historic Namsan Mountain. The gradually transforming and shifting façade module is carefully coordinated three-dimensionally, from street to the building's interior.