Some are guarded, I think, and others are destructive. Like if you try to leave out a window, you'll die before you hit the ground. And then you wake back up in the tower.

[She leads them easily down to the forest floor, and she knows the path to where's she's going like the back of her hand.]

I haven't found and end yet, and I've travelled pretty far! I think there's some sort of spacial stuff going on, since the floors really can't be this big judging by the size of the respite floors.