Spire (Stygeon Prime)

The Spire, also known as the Stygeon Prison, was a secret, remote prison fortress built into the mountains of the planet Stygeon Prime. Its builder and early history were shrouded in mystery and was constructed with similarily thick transparisteel. It was secretly used during the Clone Wars by the Confederacy of Independent Systems before being used by the Galactic Empire and its Inquisitorius during the Imperial Era.

During the Clone Wars, the prison was secretly operated by the Confederacy and was where Sith Lords Darth Sidious and Darth Tyranus held the renegade Sith Lord Maul in the prison before he escaped with the help of Death Watch.

Years later, the prison was run by the Galactic Empire and protected the prison with ray shields, blast-proof structures, anti-aircraft weapons, TIE fighters, and stormtroopers. The rebellious crew of the Ghost learned that the Inquisitors was holding Jedi Master Luminara Unduli and attempted to save her. During the attempt, former Padawan Kanan Jarrus encountered the Grand Inquisitor.

Text and facts from the “Spire (Stygeon Prime)” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.