Mid-Century Modern Travel Poster for {destination}

Create a premium editorial travel poster illustration of [Seoul]. Style: flat vector illustration, ultra clean minimalism, mid-century modern aesthetic, editorial travel poster style (Scandinavian design inspired), no photorealism, no textures, no noise, no gradients Composition: vertical 4:5 poster layout, foreground: [calm waterfront], midground: [colorful local houses or buildings with clean geometric shapes], background: [iconic natural landscape or mountain] of [Seoul] add 1–2 landmark structures (church, tower, bridge, etc.) subtly Architecture: simplified geometric buildings, clean edges, flat colors, slightly varied roof colors (harmonious palette, not random) Color palette: soft, cohesive, location-inspired colors pastel tones + muted contrast bright but not saturated (example: sky blue, coral, mustard, navy, soft green) Lighting: bright daylight, soft shadows, clean and fresh atmosphere Typography: add text at bottom center: "[Seoul]" (large, modern sans-serif, spaced letters) "[South Korea]" (small subtitle below) Mood: calm, clean, premium, slightly dreamy travel magazine feel Quality: ultra clean edges, perfect alignment, no distortion, high resolution, print-ready