The main challenge here was to design a space for engineers and architects to interact during the paper works and presence in the building. The vertical void defines the entrance, also forms the specific characteristics of the volume and its coherence with the city, which activates the back yard and southern part of the site. The vertical void is the negative space in the building. It organizes the interior spaces around it and creates a visual connection between all the levels. The waiting hall is one of the considerable parts of the building due to its majority of clients. Therefore its located by the entrance on the ground floor. The amphitheater, gallery, and event space are on the below Ground Floor.