Create a photorealistic CGI poster with a [x:y] aspect ratio, featuring the main subject of an airplane window set against a clean white background, through which we see a breathtaking top-down view of the iconic skyline of [city] on a sunny day, its major landmarks visible through a layer of fluffy clouds; shot from an eye-level angle as if looking out from inside the cabin, illuminated by the harsh, direct light of the sun creating sharp highlights and reflections on the window, set against a minimalist pure white backdrop, using a realistic color palette for the city and sky, rendered in a hyper-detailed, photorealistic style with HDRI lighting for maximum dynamic range and clarity.