3D Render: Train Inside a Medieval Fortress Courtyard

A photorealistic 3D render of a modern steam locomotive threading through the inner courtyard of a colossal medieval fortress. The fortress walls are rough-hewn gray stone with towering crenellations, watchtowers, arched gatehouses, and a dry moat. An iron railway track winds between ramparts, with ivy and moss clinging to stones. The train's steel body gleams, steam billows from the engine, and brass and copper fittings catch the warm dawn light. Cinematic, high-detail textures: weathered stone, rusted iron, polished chrome, leather interiors in the carriages. Lighting: golden hour sun, long shadows, volumetric fog, sunbeams filtering through battlements. Camera angle: low, three-quarter view, foreground gravel and fencing in sharp focus, background fortress gradually blurred for depth. Style: epic, cinematic, with subtle steampunk influences and a dramatic, awe-inspiring atmosphere.