Which, in addition to the enlightenment of book and media education, it also was constructed to provide a magnificent light show on the 5th floor at the Summer Solstice (a show I've never managed to get to see, either because I forget or I'm at work!), as the sun shines in and down the support pillars.
It's really an attractive building, although it looks rather dirty and dingy; the walls are covered with beaten copper, and as such, it has pateena-ed rather dreadfully, but it glittered when it was first constructed!