Cailisto is the largest city on the Galilean moon of Callisto. It is a spaceship construction base, along with a water collection center and a mining hub for areas past the Jovian system. It is also the main supply receiver of Callisto. As of current, the moon is being terraformed to be more human-friendly, with the city planned to be a beach resort, a place awayfromhome for people to vacate to.