Hereis a link to an article about Rem Koolhaas' building for the Seattle Public Library.

"Koolhaas sees the new library as a custodian of the book, a showcase for new information, a place for thought, discussion and reflection - a dynamic presence.

The fact that the contents of a whole library can be stored on a single chip, or the fact that a single library can now store the digital content of all libraries, together represent potential rethinking: new forms of storage enable the space dedicated to real books to be contained; new forms of reading enhance the aura of the real book.
Our first operation has been the "combining" and consolidation of the apparently ungovernable proliferation of programs and media. By combining like with like, we have identified five platforms, each a programmatic cluster that is architecturally defined and equipped for maximum, dedicated performance. Because each platform is designed for a unique purpose, they are different in size, density, opacity.
The in-between spaces are like trading floors where librarians inform and stimulate, where the interface between the different platforms is organized - spaces for work, interaction, and play. (And reading)."