I think it was just more the building that had more features, the control room was just an extra in the 3x3. The circle skylights, the parquet flooring in the long hall, the old offices. I liked all the old little electrical switches inside, the offices above the main entrance with the glass blocks. I exceptionally liked the original toilet block with porcelain urinals, the old raised cistern and a little tap above the taps. Obviously the 8x8 control room is stunning and a really good example. I did like both very much. I just felt the 3x3 had a bit more to see.