Hollow Bastion is a colossal castle that towers above the rest of its world, Radiant Garden. At one point, it is the only remaining part of the world, along with the waterways beneath it. Because of this, the world itself is known as "Hollow Bastion" However, after Tron found evidence of the true name the world slowly began to get restored. Ansem the wise and Xenahort once resided here.
