Building on the details of the main reception area I began to add buttress style pillars throughout the space. I wanted to create walls or areas that could be lit, casting some subdued light in addition to the shaft of light from above. There is still a lot of detail to add to the walls including piping and ceiling connections. There is also a floor motif to design and the ceiling itself with a walkway.
Top pictures are some wall and buttress detail, below the pictures show the rough layout of the floor space of the reception with pillar positions.