5 Roy's Castle
From the Super Mario Wiki
#5 Roy's Castle is the fifth castle in Super Mario World, and is found at the end of the Forest of Illusion. The castle includes a moving raft that Mario and Luigi have to stay on to avoid the lava below. Podoboos fly around the room damaging the brothers, as well as knocking them off the raft. After surviving the ride, the brothers make it to the boss, Roy Koopa. After he is defeated, the two were able to rescue the Yoshi Egg that was trapped inside it. Like the other castles in Super Mario World, it was destroyed shortly after. By completing this castle, the player gains access to Chocolate Island.
