As one enters the castle, they notice the small fountain that separates two sets of stairs that lead to a doorway deeper into the castle. Off to the side is a door to the castle library. As you venture deeper into the castle, there are numerous doors that lead to the bedrooms of the keyblade wielders residing here in Radiant Garden, and eventually the Arbiter's office and the master computer room, once used as a study for the great Ansem the Wise.
