Citadel is located at the far northern end of the Rolling Plains. It is a single tree, so enormous that it seems to touch the sky and isn't fully visible due to the cloud cover, with an entire city built into it,^[Ref] made of an extensive network of ladders, ropes, and boardwalks that crisscross the entire breadth of the tree. There are many open air markets within the branches, with all kinds of jewelry, clothing, leatherwork, and other interesting items. There is also an open-air arena where Valkyries are constantly sparring and testing each other’s strength. These are open to all who care to come, and are usually quite exciting.^[Ref]

Matriarch Frea's throne room is an enormous hall within the heart of the tree itself. Her throne is shaped of the living tree. The chamber is dark and comfortable, lit by flameless green phosphorus lanterns.^[Ref]