The house is a great thing! Baby can discover and taste as much. The roof folds itself with a magnet to the side, at the back is under scrim a little gem tucked away, which can be slid back and forth. On the side is a mirror and the racer's is the mouse. Pure out-in-out. That's great. In the middle of the mouse has a squeaker. The house is my daughter great, since it also has the pink rattle mouse by Haba and this is not her. !