detailed 3D model of an ancient castle wall featuring a high-quality rock texture with realistic weathered surfaces. The wall should be robust, with two ornate pillars flanking both sides, supporting intricate carvings and decorative elements. At its center, include a large imposing arched door with aged metal accents and stone relief details. Emphasize realism, intricate textures, and historical authenticity for a dramatic, fortress-inspired aesthetic. Render in ultra-high resolution