The remodeling of Hanwha Group's office building required functional improvement of the facilities that were over 30 years old as well as an exterior design containing symbolism as a leading solar energy company. Starting with remodeling consulting, Gansam Architects & Partners acted as the Master Architect, being selected as the general architect of almost all tasks, including urban planning change service, partitioned ownership agreement service, and accounting firm consulting. It was finally selected as UN Studio for building design concepts and interior design through the International Design Competition. The exterior of the building was modularized in the size of curtain wall windows and frames by function, considering variables including incident angle of sunlight, bearing, and viewing condition for PV installation. Also, the parametric design embodies a future-oriented design with all sides constantly flowing and changing.