A massive dark fantasy cathedral in...

A massive dark fantasy cathedral inspired by Dark Souls, Elden Ring, and Bloodborne architecture. Built on the peak of a gigantic snowy mountain above the clouds. The structure combines a gothic cathedral, ancient observatory, fortress, and abandoned religious research facility. Extremely complex interconnected layout with multiple towers, bridges, staircases, hidden passages, giant halls, underground archives, observatories, and vertical layers. Architecture should feel ancient, mysterious, oppressive, and sacred. Include huge gothic windows, broken statues, star-themed carvings, gigantic pillars, long hallways, hanging bridges, rooftop pathways, ruined prayer rooms, magical observatory chambers, underground catacombs, and impossible architecture. The building should feel like schol