The National Library of Belarus, Minsk, Belarus. The building is 22 stories tall and was opened in 2006, although it has been in operation since 1922. The library holds over 8 million items and has the third largest collection of Russian works in the world.
The Seattle Central Library opened in 2004 and features a beautiful glass and steel modern design created by architects Rem Koolhaas and Joshua Prince-Ramus of OMA/LMN. The goal of the design was to make an inviting open and airy space, avoiding the popular perception of libraries as dark and stuffy. The library can hold up to 1.45 million books and materials, and serves over 2 million patrons a year.