3D Toy-like Landmark Icon Set on White Background (#nb_168)

{
    "prompt": "four-grid image set A collection of icons representing famous landmarks, each visually unique and clearly labeled with its name. Each icon should correspond to a specific, easily recognizable landmark. The landmark name should be displayed directly below the icon or subtly integrated into it in a clean and legible style. All icons should form a unified theme. The background is pure white. Place the city name at the top center of the image, symmetrically aligned with the grid, using a simple font that complements the icons without being overwhelming. The icons are rendered in a rich, detailed yet simple 3D style, with slightly toy-like proportions and warm, soft lighting effects. Maintain consistency in proportions, materials, fonts, and visual language across all icons and labels to create a cohesive icon set. Top left: New York Top right: Paris Bottom left: Sydney Bottom right: Shanghai",
    "negative_prompt": "",
    "model": "Nano Banana Pro",
    "aspect_ratio": "1:1",
    "seo_keywords": "ai prompt, image prompt, json prompt, nano banana, 3d"
}