I.M. Pei-inspired colossal military structure, within "Dune" film world, immense scale, rough brutalist fusion, sharp minimalist silhouettes, angular reinforced concrete edifices, fortress harmonizes with the harsh Arrakeen landscape, imposing fortress embodies resilience and a stark futuristic vision, vast panoramic perspective, desert environment stretching into the horizon, creating an epic space odyssey atmosphere, imposing sharp-edged shadows with the dual sunset of Arrakis, structure's surface catching the soft glow of planetary rings, fortress profile etched against a fading sky, twilight dance of light and shadow on textured surfaces, advancing the narrative of human conquest and architecture, a high-resolution scene to exemplify the grandiose and lonely spirit of the cosmos, alluding to the fortress's role in the avant-garde architectural conversation.