I would chose the Monsters Inc door because it is the only door I recognize. Stepping through the door can lead to many different rooms in many different parts of the world. The adventure in it is you never know what you're going to get. The door seems like it would lead to a girls room, it is probably pink and flowered. The door usually gives a little clue about the child who lives in the room but sometimes it is off. That one door could take you to any part of the world that is sleeping at that very moment.