A giant circular city, covering an area greater than that of europe, but still only a fraction of the endless desert that is hueco mundo. great spires tower over smaller buildings, mines lead to underground dwellings for hollows that prefer such areas, research stations and battle arenas, the city is truly a haven for hollows. yet it is still surrounded by desolation.
Darkness surrounds it, and the sun never shines down on it, winds carry death and despair as they blow over it, for all it's splendour and wonder, it is still a place of terror for hollows.
the circle is divided into three circles, the inner circle being about the size of a country, and the district of the leader. the next outer circle is divided into three districts, one for each of the triad, and the final outermost circle is divided into ten, one district for each espada. the districts are then further divided as the leader of the district wishes.
the outermost districts are numbered 1-10, with sub divisions being called something like 1.1 or 9.6. the triad districts are given the names of the primary colours, with further numbers for their divisions, so blue 1 or red 8. and the center, the leader's district is generally called prime, with a following number, so prim 8 or prime 2.
only arrancar may enter the leader's district, and only hollows of arrancar or vasto lord status can enter the triad's center, however thee rest of the city is free for all hollows to travel.