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Enclosed O'Neill Cylinder City

Generates a detailed anime-style futuristic city inside a fully enclosed O'Neill cylinder colony for sci-fi worldbuilding or concept art.

Prompt

Create a highly detailed wide-angle anime sci-fi cityscape inside a completely enclosed O'Neill cylinder colony, viewed from an elevated perspective looking down the length of the cylinder toward a hazy circular vanishing point. The interior surface curves upward on both sides and overhead, packed with dense Japanese-inspired neighborhoods, apartment towers, small houses with red and blue roofs, elevated roads, pedestrian streets, parks, trees, canals, and rail lines. A bright central axial light system runs through the middle of the cylinder as three long glowing white-yellow strips, casting soft atmospheric light and creating a deep sense of scale. Include one visible elevated train on the right foreground track, many tiny pedestrians and vehicles, and warm lit windows throughout. Add readable urban signage including 3 Japanese-style residential district signs, 1 ramen shop sign, and 1 Neo-Kyoto sign, integrated naturally into the city. Use clean detailed anime line art with crisp ink outlines, cel-shaded colors, intricate architectural detail, slight fisheye perspective, blue atmospheric haze in the distance, and a lively futuristic Neo-Kyoto mood. The scene should feel like an impossible enclosed space colony, not an open sky city, with the full cylinder shell visibly surrounding the entire metropolis.

How to use this prompt

1
Copy the full prompt above.
2
Open a platform that supports GPT Image 2, such as YouMind, and paste the prompt in.
3
Swap the subject, style, or details to fit your idea, then generate.

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