An illustration of a ring-shaped world features a bustling, verdant city within its expanse, illuminated by sunlight streaming in from an upper angle.
The image showcases a breathtaking and imaginative depiction of a ring-shaped planet or moon. Within this ring, there's a lush, green, and densely populated cityscape. The city is surrounded by a clear, blue space, and there are smaller celestial bodies, like moons and planets, visible in the background. The sun is shining brightly from the top right corner, casting a warm glow over the entire scene.