Air Castle:
A castle in the middle of rolling plains, and there is always a constant wind the land is very unforgiving for
farming, because the seeds and good soil are blown away and on the lands of the air kingdom it is likely to have tornadoes.
The people have a large river that runs through thier city behind the walls, and in the river they have bars to block people
entering through the waters passage into the city. This castle is guarded by humans.
(population is humans)

A Human would be the ruler here

Abilities:
Air control
Create Tornado
Summon air elemental
Levitation