Design a vertical retro mid-century travel poster of [CITY NAME] showcasing [LANDMARK]. Stick to a tight 3-color scheme: cream-toned paper background, black technical line drawing, plus one [COLOR] accent. Aesthetic: minimalist isometric top-down aerial perspective with very fine cross-hatching and silkscreen print grain. Color rules: fill the entire sky in flat solid [COLOR], add small [COLOR] touches on rooftops or street details. Zero gradients allowed. Typography: large bold sans-serif "[CITY NAME]" at the top in cream, with the city's name in its native language set smaller in cream beneath it. #AIart #GPTImage2
