This building is a headquarters of a holding company for recycling. To create an organic workplace that responds to a changing organization, the office was designed to gently incorporate the external environment, with natural changes that can be enjoyed at different places. By designing the workplace and environment to be closely related, the shape of the walls and the atrium were formed parametrically to maximize the useful daylight illuminance. The atrium, which has a different shape on each floor, has a staircase that allows users to move around while feeling the natural light and breezes.