Kessia
From Wookieepedia, the Star Wars wiki.
Kessia was the capital city of Thule. It was the stronghold of the Sith armies during the Sith War and was it also where their ancient weapon, the Dark Reaper was buried.
During the Clone Wars, Count Dooku and the Confederacy of Independent Systems had control of Kessia and unearthed the massive machine. This proved to be a serious threat to the Republic, and made Kessia the prime location of the Battle of Thule. During the final stages of the battle, Anakin Skywalker led the Clone Army break through the defenses into the city and destroyed the Reaper shortly after it was reactivated.
Following the battle, Kessia was left in smoldering ruins.
[edit] Behind the scenes
The city is called Kesiak in The New Essential Chronology.
