The Citadel was an imposing structure which housed the Capitol's War Department. It was guarded at all times by Peacekeepers and was considered a high-security zone. Dr. Volumnia Gaul, the Head Gamemaker of the 10th Hunger Games, was based at the Citadel. She had laboratories underground, where she bred various twisted muttations, including snakes and rabbits. The place scared Clemensia Dovecote as a child, and Coriolanus Snow admitted that it still scared him.
- The Ballad of Songbirds and Snakes, Chapter 7
- The Ballad of Songbirds and Snakes, Chapter 10
- The Ballad of Songbirds and Snakes, Epilogue