复古中世纪风格旅行海报地标插画

Create a 3:4 vertical retro travel poster featuring [Country / City Name] and its representative landmark [Building / Natural Landscape Name].

The overall style adopts Mid-century Vintage Travel Poster / Vintage Lithograph / Retro Tourism Poster, referencing the visual language of classic mid-20th-century aviation, railway, and national tourism promotional posters.

Main Subject:
Use [Landmark Name] as the absolute visual center; the building or landscape must have real, accurate, and clearly identifiable iconic silhouettes and structural features. Naturally include auxiliary elements such as [trees / mountains / rivers / lakes / streets / city skyline / clouds / vegetation] based on the actual local environment, but do not let them overshadow the main subject. The composition is simple, stable, possessing a monumental visual sense and a collectible travel poster feel.

Poster Layout:
Retain a wide warm ivory / beige old paper border on all sides, with the main image placed inside a thin-line rectangular frame.
At the top of the poster, use an extra-large, bold, geometric sans-serif English title:

[CITY / COUNTRY]

The letter spacing is slightly wide, with a deep dark green or deep blue-green ink effect. A minimalist thin horizontal line and a small geometric decorative symbol related to the local culture can be added above the title, but remain restrained and do not add redundant information.

Printing Texture:
Simulate real vintage Lithograph / Screen Printing / old magazine printing effects, adding fine halftone dots, paper fibers, ink particles, slight ink leakage, mild fading, faint overprint displacement, natural wear, small areas of white noise, and aged grain.
Maintain a clear sense of physical printing; do not use smooth digital illustration effects or modern 3D rendering feels.

Color Palette:
Use a limited color palette and low-saturation retro colors, dominated by grey-cyan-blue sky, deep dark green, warm beige, ochre, terracotta orange, faded red, and warm golden sunlight.
Highlights lean towards cream yellow and warm orange, while shadows lean towards deep cyan-green and blue-grey. The overall color is rich but not gaudy, possessing the synthesized tones of an old poster oxidized over time.

Lighting:
Soft morning or afternoon slanted sunlight, creating warm golden highlights on buildings and natural landscapes, forming a classic warm-cold contrast with the cyan-blue sky. Clouds are thick and soft, with an old printed magazine texture.

Overall Temperament:
nostalgic, timeless, elegant, cinematic, collectible, editorial, refined, poetic, sophisticated, archival travel poster aesthetic

Image Requirements:
Sophisticated composition, clear subject, natural negative space, rich details without clutter, ultra-high definition, possessing the high-end retro travel poster texture that is truly printable and collectible.

Avoid:
Modern commercial advertising feel, neon colors, high-saturation candy colors, smooth CG, plastic texture, AI over-sharpening, complex layout, large amounts of small text, random English, garbled characters, modern UI elements, excessive realistic photography feel, cartoonish feel, distortion of the main building.

将【国家 / 城市名称】与其代表性地标【建筑 / 自然景观名称】创作成一张 3:4 竖版复古旅行海报。

整体采用 Mid-century Vintage Travel Poster / Vintage Lithograph / Retro Tourism Poster 风格，参考20世纪中期经典航空、铁路及国家旅游宣传画的视觉语言。

画面主体：
以【地标名称】作为绝对视觉中心，建筑或景观必须具有真实、准确、清晰可辨识的标志性轮廓与结构特征。根据当地真实环境自然加入【树木 / 山脉 / 河流 / 湖泊 / 街道 / 城市天际线 / 云层 / 植被】等辅助元素，但不要喧宾夺主。构图简洁、稳定、具有纪念碑式视觉感和旅行海报的收藏感。
海报版式：
四周保留宽幅 暖象牙白 / 米黄色旧纸边框，主体画面置于细线矩形边框内部。
海报顶部使用超大号、粗体、几何无衬线英文标题：

【CITY / COUNTRY】
字距略宽，深墨绿或深蓝绿色油墨效果。标题上方可加入极简细横线及一个与当地文化相关的小型几何装饰符号，但保持克制，不加入多余信息。
印刷质感：
模拟真实老式 石版印刷 / 丝网印刷 / 旧杂志印刷效果，加入细密 halftone 网点、纸张纤维、墨水颗粒、轻微漏印、轻度褪色、微弱套印偏移、自然磨损、小面积白色噪点与年代感颗粒。
保留明显的实体印刷感，不要光滑数字插画效果，不要现代3D渲染感。

配色：
使用有限色盘和低饱和复古配色，以 灰青蓝天空、深墨绿、暖米白、赭石、陶土橙、褪色红、暖金色阳光 为主。
高光偏奶油黄与暖橙，阴影偏深青绿与蓝灰色。整体色彩浓郁但不艳俗，具有老海报经过时间氧化后的综合色调。

光线：
柔和的清晨或下午斜射阳光，建筑与自然景观产生温暖金色高光，与青蓝天空形成经典冷暖对比。云层厚实柔软、具有老印刷画报质感。

整体气质：
nostalgic, timeless, elegant, cinematic, collectible, editorial, refined, poetic, sophisticated, archival travel poster aesthetic
画面要求：
构图高级、主体明确、留白自然、细节丰富但不杂乱，超高清，具有真正可以印刷收藏的高级复古旅行海报质感。
避免：
现代商业广告感、霓虹色、高饱和糖果色、光滑CG、塑料质感、AI过度锐化、复杂排版、大量小字、随机英文、乱码、现代UI元素、过度写实摄影感、卡通感、主体建筑变形。