The Citadel of Schueler was a building in the city of Zion, with a notorious reputation as the place where the question and punishment of Schueler were conducted on the unfaithful.

It was not a part of the original Temple complex, having been built at a later time for the Office of the Inquisition. Its walls were reputibly thick, for noise control, and its dungeons were buried deep below it.

The crew of the captured Charisian warship HMS Dancer were subjected to the Question and Punishment within the citadel. (HFAF)