The Moon is a natural satallite of the planet Earth.
In Xanth[]
The Moon above Xanth is made of cheese on the side facing Xanth and covered with honey on the side facing away from Xanth. Couples go to the other side of the moon for their honeymoons.
There is a moon hovering above the head of Ida named Ptero. From Ptero, one could travel to infinite other moons.
In Bio of a Space Tyrant[]
The Moon in Bio of a Space Tyrant was claimed and colonized by the government of Sri Lanka.