Realm of the Sorcerer

Almost as great in scale as Khorne's domain is the Crystal Labyrinth of Tzeentch, an iridescent plateau whose brilliance sits in stark contrast to the Blood God's wastelands. Whilst the crystal labyrinth is not so massive as Khorne's kingdom, it dominates the Realm of Chaos no less. Countless glittering pathways spring from the very heart of the labyrinth, fractal filaments that inveigle their way into the dominions of other gods and so bind the Realm of Chaos together.

No Daemons guard the crystal labyrinth, yet a journey through it remains perilous nonetheless. Only the strong-willed can negotiate its countless corridors, for the maze's walls reflect not only light, but also hope, despair, dreams, madness and terror. As if this were not challenge enough, there is no fixed path through, merely a constantly changing series of obstacles and traps created by Tzeentch's unconscious mind. Those trammelled by the labyrinth come to no physical harm, yet no one can escape these halls of infinite possibility with sanity intact. At every step the air is thick with broken dreams, and everywhere the light sparkles with fragments of shattered personality.

Places of Note

 * Blasted Wastes
 * Citadel of the Iron Knight
 * Crystal Labyrinth
 * Eternity Stair
 * Eyrie of the Watcher
 * Frozen Moon
 * Heavenward Halls
 * Impossible Fortress
 * Mountains of Questioning
 * Ninth Library, the
 * Obsidian Council
 * Ruins of the Dead King
 * True Liar's Monolith

Source

 * Warhammer Armies: Daemons of Chaos (8th Edition) -- pg. 9