The concept of the sales department planning was to create one visual united area. Independent of the entire area division into separate rooms (such as a hall, meeting rooms, room for sales managers) the space is sensed as a single whole due to glass partitions. When entering the sales department, we find ourselves in a spacious high hall extending full-length of the building. A model of a future residential quarter, with a designed large daylight ceiling lantern 3 x 3 m in size is located in the middle of this hall. Large stained glass windows extending from the floor to the ceiling expand the space and well illuminate the hall full-length. The use of decorative green strips on glazing makes the room fresh and bright and also serves as a visual shield between the hall and meeting rooms, not weighing the partitions.