DESTINATION LANDMARK-LED GEOMETRIC ART POSTER — HAMBURGCreate a sophisticated vertical travel art poster featuring Hamburg.FORMAT — vertical poster, aspect ratio 9:16, high-resolution editorial travel poster, generous negative space, stable vertical composition.CORE CONCEPT — the most important principle is: LANDMARK 70% + GEOMETRIC ABSTRACTION 30%. First clearly depict the iconic landmarks that make Hamburg instantly recognizable, then apply geometric simplification on top. Recognizable landmark first, artistic simplification second. The viewer should immediately think: "This is Hamburg."LANDMARK PRIORITY — Primary landmarks (the protagonists):Elbphilharmonie — the unmistakable modern concert hall rising above the HafenCity waterfront, with its distinctive curved glass roofline, wave-like silhouette, and large glass façade built upon the historic brick warehouse base.St. Michael's Church (Michel) — Hamburg's iconic Baroque church with its tall copper-green dome, elegant white clock tower, and prominent vertical silhouette.Secondary elements (arranged around them): the Elbe River, Hamburg's historic red-brick Speicherstadt warehouses, elegant canal bridges, and subtle silhouettes of harbor cranes and waterfront architecture.Keep the main landmarks at ~70% recognizable real-world form; simplify only unnecessary detail.COMPOSITION — keep the upper 40–50% as quiet sky / negative space. At the upper center, place only the destination name: HAMBURG, small refined uppercase thin sans-serif, wide letter spacing. Build the cityscape in the lower portion, with the Elbphilharmonie as the main visual anchor leading the eye, while St. Michael's Church provides a strong secondary focal point. Integrate the Speicherstadt and waterfront naturally around the two landmarks without overcrowding the composition.COLOR PALETTE — soft northern European evening light: warm ivory, muted slate blue, dusty blue-grey, soft seafoam green, muted brick red, pale sandstone beige, charcoal grey, and subdued copper. A limited, sophisticated 6–10 colour palette, no over-saturation, museum-print / gouache feel.TEXTURE — subtle handmade surface: paper fibre, dry brush, gouache, colored pencil, silkscreen. NO aged paper, vintage brown filters, sepia or yellowed backgrounds.STYLE — Scandinavian editorial illustration, mid-century geometric art, landmark-led architectural illustration, fine-art museum-shop print.BALANCE — 70% recognizable landmark & architecture, 30% geometric abstraction. Geometry organizes; it never dominates.CONSTRAINTS — exact spelling "HAMBURG", no text other than that single word, no over-abstraction, no giant circles dominating, no photorealism, no cartoon, no 3D, no neon, no gold, no vintage filters, no watermark, no logos.