The Boathouse is a exterior building at Hogwarts where the boats are stored and where they dock when the First Years arrive at Hogwarts Castle. The portrait of Percival Pratt, hanging on one of the walls, conceals a shortcut to the Grand Staircase. There are some rafters in the ceiling, that are used to store the small wooden boats. There are four entrances to this building: The path outside the Paved Courtyard, the stairs going down from the Entrance Courtyard, the hidden passageway behind the potrait of Pratt, and the Lake.