A dimension of its own, murimblock:raven_halls, reached only through the doors of the Raven Messenger Art. Always night, no sky, a dark fog.

The endless castle

Galleries, red columns, stairs, chains and lanterns on every level, one level every 14 blocks from the bottom to the top of the world, in every direction, over black water: pavilions hang upside down and voids open between them. Nothing spawns there.

The closed rooms

A row of rooms with no castle around them: Raven Gate, Closed Room, The Halls Unfold and the passive put enemies there.

Your own hall

• Crouch and cast Closed Room to go home: The Raven Halls. Built the first time you come, 4 096 blocks from anyone else's.
• A terrace of 45 × 45 with a pavilion of 21 × 21: tatami floor, a gold raven seal, a nest, lanterns.
• Four shadow doors, which cannot be broken: the south door takes you back where you came in from; the west, east and north doors lead to your Raven Perches. A door with no perch behind it: No perch behind door 1 yet. Set down a Raven Perch in the world.
• Nothing stops you building or mining there: it is your base. Beds work; respawn anchors do not.
• No one else can be brought into it yet.

Every crossing shows Minecraft's loading screen for a moment. Planned: an item that lets an ally enter your world with you.