Futuristic city with a futuristic flying saucer in the sky

alien mechanical flying city, extreme detail, UHD, best quality, masterpiece, detailed design, metallic body, glowing neon lights, advanced propulsion system, air traffic control tower, extremely detailed futuristic cityscape, best quality background, hovering above the clouds, massive rotating turbines, glass cockpit, holographic HUD display, vibrant color scheme, dynamic lighting effects