The Guardian is a British national daily newspaper. Founded in 1821 as a local paper replacing the radical Manchester Observer, it was known as The Manchester Guardian until 1959. It has grown into a national paper, and forms part of a media group with international and online offshoots. Its sister papers include The Observer (a British Sunday paper) and The Guardian Weekly (an international roundup of articles from various papers). In addition to its UK online edition theguardian.com, the paper has two international web sites, Guardian Australia and Guardian US.