Established in 1972 under the auspices of UNESCO, the World Heritage Center's primary mission is "to define and conserve the world's heritage, by drawing up a list of sites whose outstanding values should be preserved for all humans and to ensure their protection through a closer co-operation among nations." While there is a host of information about the various cultural and natural sites on the list (754 in total), the site also contains valuable information about events sponsored by the Center, materials for young people, and information about volunteering to assist with the Center's efforts to preserve these unique sites. The section for young people includes a piece on how a site becomes nominated for inclusion on the list, and a list of outside resources. Additionally, the news section contains updates about efforts to preserve the sites on the list and the archives of the World Heritage Newsletter, which is available in the .pdf format.