A massive dark fantasy cathedral bu...

A massive dark fantasy cathedral built on top of a frozen mountain peak in Minecraft style. The structure combines gothic architecture, ancient observatory elements, and mysterious magical symbolism. Tall spires reach into the sky, connected by bridges and broken arches. Large stained glass windows glow with blue and purple astral light. The cathedral contains a grand central hall, hidden libraries, ritual chambers, and an enormous star observation room beneath an open dome. Strange glowing patterns are carved into the floors and walls, resembling cosmic cracks or magical constellations. The atmosphere should feel sacred, ancient, isolated, and slightly unsettling, as if the people here discovered forbidden truths about the universe. Minecraft medieval dark fantasy style, highly detailed,