A library is not just a collection of books, but also the buildings that house them. As varied and inventive as the volumes they hold, such buildings can be much more than the dusty, dark wooden shelves found in mystery stories or the catacombs of stacks in the basements of academia. From the great dome of the Library of Congress, to the white fa ade of the Sein joki Library in Finland, to the ancient ruins of the library of Pergamum in modern Turkey,...