The Atrium is the original realm; the First Realm. This is where the Elders spend most of their time. There are two areas: the Outer Atrium and the Inner Atrium.
The Outer Atrium consists of the Gaurdian Halls, the Archives, etc. This part of the Atrium is easy for mortals to get to, although you need to know how to get there. This part of the Atrium is made of mostly large rooms.
The Inner Atrium is where only the Elders and other figures important to the upkeep of the After Realms may go. It consists of the Origin Point, the Inner Sanctum, etc. This part of the Atrium is made of domed rooms which are very bright white.
