The Citadel is an archive of information for George R.R. Martin's A Song of Ice and Fire.
New to the series? Read our spoiler-free review of A Game of Thrones.
[Note: This interview discusses broader thematic details of the A Song of Ice and Fire series, especially its historical sources, as well as Martin's early experiences that led him to become a writer.]
The Westeros network consists of several different sites, including a forum and a wiki, for all your A Song of Ice and Fire needs.