Darth Nyriss sought refuge in her fortified palace, located just outside Kaas City on Dromund Kaas. This stronghold provided protection from the numerous assassination attempts on Darth Nyriss's life.
A spacious courtyard was a key feature of Darth Nyriss's stronghold. Imposing stone walls defined the northern and southern perimeters. The eastern side opened directly onto the street, while the western edge bordered what Scourge believed to be Darth Nyriss's personal residence. The structure bore a striking resemblance to the Emperor's citadel, though considerably smaller in scale. This architectural mirroring seemed to be more than a simple tribute to the Emperor. The courtyard was adorned with about six sizable statues, each with a base several meters across and towering at least twice Scourge's height. The two largest depicted humanoid figures in Sith robes—one male and one female. They stood with arms slightly raised, palms facing upward. The male figure's face was obscured by a hood, a common representation of the Emperor. The female figure's hood was pulled back, revealing her stern Sith features. The remaining statues were abstract in design, yet each incorporated Nyriss's family symbol—a four-pointed star enclosed within a broad circle. The ground was covered in meticulously arranged fine white pebbles. A unique type of lichen, flourishing in the dim environment of Dromund Kaas, was strategically planted among the stones, its subtle purple glow casting an ethereal light. A smoothly paved stone path stretched from the massive double doors at the stronghold's entrance, through the courtyard's center, and out to a small landing area for speeders.
A small holoscreen accompanied by a call button was positioned beside the entrance doors. Inside the stronghold was a well-lit study or private library. The walls were lined with shelves, their aged wooden frames bowing under the weight of their contents. The left wall's shelves held dozens, perhaps hundreds, of volumes. The majority of these books were large and substantial, their pages bound and protected by leather or similar cured hides. They possessed an antiquated appearance, yet most seemed well-preserved, albeit slightly worn from use. The right wall's shelves contained reference materials that appeared even older and more fragile. Individual sheets of yellowed parchment were secured with delicate wire clips, while rolled scrolls were housed in transparent protective tubes. A hinged glass cover protected several books that looked as though they would disintegrate at the slightest breeze. A large array of holodisks and datacards lined the rear wall, and a computer workstation stood in the room's center.