A wooded island in the center of the God's Eye, ringed by weirwoods that wear a carved face for every one of the years since the Pact was sworn upon its shore. No man lands there uninvited and lives to boast of it — or so every maester who has never tried it assures the reader.
Here, at the end of the long wars between the First Men and the children of the forest, the two peoples are said to have met and sworn the Pact: the First Men would keep to the coasts and the open lands, the children to the deep wood, and the weirwoods everywhere would go uncut. In token of the oath, a face was carved into every tree upon the island, until it bristled with a thousand carved eyes watching over the vow.
The order of green men rose afterward to keep the isle and its wood, and the tales still call it the last unbroken haunt of a peace that four thousand years have failed to keep anywhere else in Westeros. Some tellings hold that this was also the working-ground of the Hammer of the Waters; other tellings place that spell at Moat Cailin instead, and the isle, wisely, has never troubled to correct either version.
In the timeline
Beyond the text
What the chronicle strongly implies but never states outright, and what the author has said beyond the page — set apart from the established record, and never sworn to by the maesters.
Theorized
The green men are said to keep the Isle of Faces still, warding the thousand weirwoods carved at the signing of the Pact. No maester has set eyes upon them in living memory — yet the island's untouched heart, and the faces that watch from every tree, imply the old watchers guard it yet.
SourceThe World of Ice & Fire, "The Dawn Age"; A Game of Thrones, Catelyn
SourcesTWOIAF · The Dawn AgeAGOT · Bran VII
Where is The Isle of Faces?
A wooded island in the center of the God's Eye, ringed by weirwoods that wear a carved face for every one of the years since the Pact was sworn upon its shore. No man lands there uninvited and lives to boast of it — or so every maester who has never tried it assures the reader.
Is The Isle of Faces from the books or the show?
Book canon. This entry follows George R. R. Martin's novels and histories, and notes where the television series diverges rather than following it.