The upper floors of the House of Thule are where the house stops pretending to be a house and becomes something else. The lower floors, for all their strangeness, still have the shape of inhabited rooms and connecting corridors. Up here the scale shifts. The ceilings are higher than they need to be, the proportions are wrong in ways that are hard to name, and the furniture exists to fill space rather than serve any function. This is Morell Thule's domain at its most deliberate: a place designed not to be lived in but to be dreamed about.
The upper floors are locked behind progression. Completing the group missions in all four Tier 2 zones is required before the doors here open. Once inside, adventurers find a zone that serves as the hub for the expansion's most challenging content, with passages leading to the three Tier 3 nightmare zones and onward to Morell's Castle.
The residents of the upper floors are stronger than anything below, and the named mobs here hit considerably harder than their Tier 2 counterparts. The zone also hosts two raid expeditions.