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This article is about the prison located in the Fire Nation Capital. For other similar uses, see Prisons (disambiguation).

The Capital City Prison, also known as Hari Bulkan Prison[2] or Prison Tower, is a large, fortified stone tower located in the Fire Nation inside the hollow volcanic crater that also contains the capital city, where highly prioritized criminals are kept.[3]


After their defeat against Azula and her friends, some of the Kyoshi Warriors were imprisoned here.[4]

After his capture at Ba Sing Se, Iroh was imprisoned here. Prior to the solar eclipse, he secretly began a rigorous workout, able to regain a significant amount of strength. Using the eclipse and Warden Poon's lack of firebending to his advantage, Iroh easily overwhelmed him and escaped. After Zuko declared his intentions of joining the Avatar, he went to free Iroh from prison, only to find a busted up cage and a semi-conscious Warden Poon.[5]

After the failed invasion on the Day of Black Sun, the prison was used to house many of the captured invaders and war prisoners, such as Hakoda, until their transfer to the Boiling Rock. After Fire Lord Ozai was defeated by Avatar Aang, he was incarcerated here.[6]

Most of the Safe Nation Society was imprisoned here after participating in a riot in the capital city. Their leader, Ukano, later joined them after turning himself in.[7]


The interior consists of various caged cells made of stone, which are watched over by guards like Ming. This design allows guards to enter without being attacked. It should also be noted that even though the prisoner is locked in the cage, the actual cell door is generally left unlocked.


  1. Avatar Extras for "The Boiling Rock, Part 1" on Nicktoons Network.
  2. Avatar Legends: The Roleplaying Game. Core Book, Version 1.0, 2022, p. 70.
  3. From older Avatar: The Last Airbender official site, originally on Nick.com. Encyclopedia now broken, archived at The Lost Lore of Avatar Aang - Location: Prison Tower.
  4. Chan, May (writer) & Dos Santos, Joaquim (director). (July 16, 2008). "The Boiling Rock, Part 1". Avatar: The Last Airbender. Season 3. Episode 14. Nickelodeon.
  5. Ehasz, Aaron (writer) & Dos Santos, Joaquim (director). (November 30, 2007). "The Day of Black Sun, Part 2: The Eclipse". Avatar: The Last Airbender. Season 3. Episode 11. Nickelodeon.
  6. DiMartino, Michael Dante, Konietzko, Bryan (writers) & Dos Santos, Joaquim (director). (July 19, 2008). "Sozin's Comet, Part 4: Avatar Aang". Avatar: The Last Airbender. Season 3. Episode 21. Nickelodeon.
  7. DiMartino, Michael Dante; Konietzko, Bryan; Yang, Gene Luen (writer), Sasaki of Gurihiru (penciling, inking), Kawano of Gurihiru (colorist), Heisler, Michael; Comicraft (letterer). Smoke and Shadow Part Three (April 12, 2016), Dark Horse Comics.