The World That Never Was

It is situated next to the realm of darkness in an in-between realm. It also houses the second of the headquarters of Organization XIII, the Castle That Never Was, which is portrayed as a huge white castle decorated with the emblem of the Nobodies, in addition to Dark City, a deserted metropolis of skyscrapers. The most distinct feature of this world of perpetual night is a large, heart-shaped moon, which Organization XIII members refer to as "Kingdom Hearts". Kingdom Hearts was designed to appear as a heart-shaped moon.