Heaven's dungeon

"Its like Hell; All the torture, twice the self righteousness."

- Anna to Dean Winchester

Heaven's Dungeon is special part of Heaven that was created to imprison rebellious angels.

This dungeon is like Hell to all it's inhabitants. The guards were ordered to daily torture their prisoners with an angel blade, to punish the angel for their crime against Heaven. Anna stated that it was worse then Hell for angels.

History
The dungeons of Heaven have been existing for a very long time. Exactly when they were created is unknown, although they have been functional a short time after creation of humanity, and around the time Lucifer was tempting humans.

One of the earliest known prisoners the dungeons held was Gadreel, the angel who allowed the fallen archangel into paradise to trick Adam and Eve.

Characteristics
The dungeons are powerful enough to contain angels. The dungeons appeared to work by sapping an angel of its powers, although a few notable angels have been known to escape from it.

The dungeons are mobile and could materialize when needed. The dungeons materializes in a manner that separates its target prisoners. Once in place, few things could infiltrate the dungeons. The only proper way to escape it is by using the proper keys. If her claim was true, Anna Milton scaped the dungeons using an unknown method. Gadreel managed to escape his cell and even demolish a nearby cell by using a spell that also took his life.