The Sith Citadel, also called the Citadel, was an ancient Sith temple located on the hidden Sith world of Exegol. It was the headquarters of the Sith Eternal cult following the demise of the last two Sith Lords at the Battle of Endor and contained the throne of the Sith, which the resurrected Dark Lord of the Sith, Darth Sidious, intended to to serve as the seat of his new Empire.
The Citadel was both underground and above ground, with the latter being a large, upside-down truncated pyramid structure made of black stone. The structure floated above Exegol's surface. A platform was used to lower someone into the underground part of the Citadel.
The Sith Citadel contained a large hall filled with ancient Sith statues. It also had an arena or amphitheater that housed the throne of the Sith, and at least one other room used for medical purposes, such as cloning and life support (at least during the time Darth Sidious occupied it).
At some point during the reign of the Galactic Empire, Darth Sidious had two Sith wayfinders created to guide the way to the Citadel on Exegol. One was made for himself and stored within his throne room upon the second Death Star, while the other was given to his apprentice, Darth Vader, who kept it in his castle on Mustafar.
First Order-Resistance war
- Darth Sidious: "At last… Snoke trained you well."
- Kylo Ren: "I killed Snoke. I'll kill you."
- Darth Sidious: "My boy… I made Snoke. I have been every voice—"
- Darth Sidious (Snoke's voice): "—you have ever heard—"
- Darth Sidious (Vader's voice): "—inside your head."
- ―Darth Sidious goads Kylo Ren within the Citadel[src]
Sometime following the Battle of Endor, Sith loyalists chose the Citadel to be their new fortress, as they believed Moraband—while once the greatest fortress of the Sith—was too likely to be discovered. At some unknown point, Darth Sidious was resurrected and came to reside at the Citadel, where he guided Snoke's actions, both to test Kylo Ren's worthiness to take up the Sith mantle and to rule over the First Order while Sidious moved in the shadows.
Meanwhile, Jedi Master Luke Skywalker believed the conflict with the Sith was not over despite Vader's conversion to Anakin Skywalker and the death of Sidious above Endor. He and Lando Calrissian set out to locate the Emperor's wayfinders in the hopes of locating the Citadel on Exegol, where Luke believed he could end the conflict with the Sith once and for all. Luke's hunt went cold on Pasaana and he ultimately went into exile on Ahch-To following the fall of his nephew, Ben Solo.
In 35 ABY, Supreme Leader Kylo Ren arrived at the Citadel with the intent of killing the resurgent Emperor, whom he believed was a threat to his power. However, Sidious convinced Ren to instead take up the hunt for the Jedi apprentice Rey, who was in reality his granddaughter, in exchange for the Sith Eternal fleet and the might of the Final Order. However, Ren was turned from the dark side through the combined efforts of Rey and his mother, Leia Organa, and became Ben Solo once again.
After using Ren's wayfinder, Rey arrived at the Citadel and confronted Sidious. She refused Sidious's offer to become a Sith and, joined by Ben, attempted to kill the Dark Lord once and for all. Instead, Sidious used their dyad in the Force to restore his mortal body. From the Throne of the Sith, Sidious unleashed a storm of power that nearly destroyed the Resistance forces. However, empowered by the voices of all the Jedi who came before her, Rey stood and defeated Sidious by reflecting his lightning back at him. The resulting shockwave destroyed the Citadel, and left Rey alone, where she effectively died. Rey was revived by Ben Solo, who used Force healing in conjunction with his dyad with Rey to trade his life for her's. Ben died in the ruined Citadel, and became one with the Force. Rey flew away from the ruins in Luke Skywalker's X-Wing.
- Star Wars: Episode IX The Rise of Skywalker (First appearance)
- Star Wars: The Rise of Skywalker: The Visual Dictionary (First identified as Sith Citadel)