A Multitude of Colorful Portals Opening to Worlds in Cosmic Ruins

An endless avenue of ancient gold-accented ruins reveals a multitude of colorful portals opening to different cosmic worlds. Against a dark-blue background, planets and luminous spheres float while golden highlights define arches and columns. The mood blends mystical fantasy and sci-fi, inviting exploration and adventure across unknown universes. The interplay of deep space and detailed architecture creates a strong sense of scale and mystery.