An 8K photorealistic image of a modern metro-station interior featuring a wide, illuminated billboard centered on a wall of small slate-grey tiles. The billboard has a thin black frame and a completely blank, evenly lit white surface, devoid of text or graphics. Overhead cool-white lighting casts soft rectangular highlights on the tiles, while the billboard’s warmer glow adds gentle ambient light. Below the wall, dark-grey stone floor slabs and a slim run of metal conduit enhance realism. The camera is perfectly level, using a 35 mm lens, set to f/8, ISO 200, producing sharp detail and rectilinear lines. The style is minimalist, realistic, and suitable for an advertisement mock-up.