The Web site library is a new type of digital library incorporating both digital collections and digital service. In the parliamentary context, this new application of information and communications technology has a dual function: to provide a virtual collection to satisfy users' information demands and to provide all the current services needed by clients of a parliamentary library in modern society. In this paper, the application of information technology in the library, the role of media in the library, and its digital collection development are surveyed by decades from 1960 to 2010. Then the five domains or zones of Internet-based content in the Web site library of the Parliament Library of the Legislative Yuan of the Republic (Taipei, Taiwan, Republic of China) are described (i.e., the browsing, searching, dissemination, reference, and leisure zones), and an overview of this Web site library's services is given. (Author/MES)