a big and structured landscape of an ancient civilization city with a portal to outer space 4k digital art unreal engine trending on artstation pearly flagstones, giant trees, god rays, bloom, volumetric fog, moody ambiance, cinematic lighting, twilight, sunset, rose and lavender and amber tones, Maxfield Parrish, Brom, Caravaggio, Da Vinci, Rubens, fantasy character, portfolio illustration, highly detailed, trending on Artstation, CGsociety, HQ, 8k, 35mm lens, f2.8, Bokeh