Because of the recent revolution, Labrouste wanted France to have a national style. He also used train stations for inspiration in his design. Most importantly, Labrouste’s Bibliothèque Nationale is an example of a shift of material. The library boasts cash iron arches, often referred to as open work. Aside from this, Labrouste incorporated new technology, like the use of plaster to stabilize and strengthen the structure. Therefore, the library has both modern and classical design elements.