
And if you tell every maester
in the Citadel
Game of Thrones Season 7, Episode 5

The Citadel stripped me of it.
Game of Thrones Season 3, Episode 5

You are a maester of the Citadel,
Game of Thrones Season 2, Episode 6

The Citadel?
Game of Thrones Season 5, Episode 5

So, why did the Citadel take your chain?
Game of Thrones Season 3, Episode 7