The Place of Kastays was a structure located on Aaris III. It functioned as a tower where the Kastays of Aaris attempted to confine the malevolence emanating from the Plaque of Victory. A learned individual documented the demise of the Aaris people through a collection of images that produced audio when activated.
Subsequently, the Imperial research unit MS-133 journeyed to the world to study the Aaris. During their investigation of the Place of Kastays' remnants, Grigor Tansad started interpreting the image-based writings and gained insight into the Aaris culture. They also discovered the Plaque of Victory's location, and its power led to the team's demise. The Place of Kastays served as the location of Jelok's killing, apparently committed by Tansad, who seemed disoriented and filled with paranoia.