The Archive is headquartered in San Francisco, California. From 1996 to 2009, its headquarters were in the Presidio of San Francisco, a former U.S. military base. Since 2009, its headquarters have been at 300 Funston Avenue in San Francisco, a former Christian Science Church. At one time, most of its staff worked in its book-scanning centers; as of 2019, scanning is performed by 100 paid operators worldwide.[44] The Archive also has data centers in three Californian cities: San Francisco, Redwood City, and Richmond. To reduce the risk of data loss, the Archive creates copies of parts of its collection at more distant locations, including the Bibliotheca Alexandrina[45][46] in Egypt and a facility in Amsterdam.[47]