The Iris Palace is the final destination of the player character in Rosenkreuzstilette and is the home of Iris Zeppelin, who has turned out to be a reincarnation of none other than Rosenkreuz who instigated the RKS Rebellion for her own amusement. It is the setting for the Iris Stages as well as the Last Stage, which starts out at the pinnacle of the palace and moves up into the the sky above the palace itself.