Utopia District (Anime)

The Utopia District (ユトピア区) is the northernmost district of Wall Rose.

Clash of the Titans arc
The Utopia District is briefly mentioned by Armin Arlelt in the mission to rescue Eren Jaeger from the Armored Titan. He tells Bertholdt Hoover that Annie Leonhart has been captured and that she is currently being tortured for information in the district's underground. This distracts Bertholdt long enough for Erwin Smith to climb on the Armored Titan and swing his sword down Bertholdt's torso, freeing Eren who was tied to his back.