The Citadel of Ktath'atn, also known as the Screaming Citadel was a citadel located on the planet Ktath'atn. Doctor Aphra traveled to the Citadel of Ktath'atn with Luke Skywalker to attend a party hosted by the Queen of Ktath'atn and then get her to open an ancient Jedi artifact which contained the personality of a Jedi named Rur.