The City of Kastays was a major city on the planet Aaris III in the Kathol sector of the Outer Rim Territories several thousand years before the Galactic Civil War. Inhabited by the native Aaris, the city was home to the Place of Kastays and was large enough to require a standing city guard. Several millennia prior to the Galactic Civil War, the city was the location to which the Plaque of Victory—a sentient, inanimate lifeform that had the goal of destroying all life around it by manipulating the feelings of others to do its bidding—was brought to following its discovery. The City of Kastays descended into violence and disorder under the influence of the Plaque, and fell into ruin and disrepair following the downfall of the Aaris civilization.