A remote, wind-lashed fortress that rises from the sea, the wizarding prison of Britain. Inside is a maze of narrow corridors and echoing chambers built from stone that seems to swallow sound. Lanterns burn with greenish light that never warms, and enchantments crawl like thin frost across the walls. The guard spells drift in a slow orbit overhead, silent and watchful. Access is tightly controlled, and few visit willingly. Most visitors do not stay long; even fewer return unchanged.