Let me explain
The old building's wide roof became a light-filled reading landscape, the book stacks are kept inside it, and visitors reach the open-access sections by bridges from the reading area. The custom facade uses white rhomboid textile awnings carried by a three-dimensional tensioned steel cable structure; they shade the building and reinterpret the Arabian tent tradition in a modern, technical way, and at night the facade glows with a soft white light. Gross floor area 86,632 square metres, gross volume 452,000 cubic metres (Gerber Architekten).