The Second District is infested with a variety of Heartless. Notable locations include the Gizmo Shop; a bell on the roof can eventually be rung 3 times to reveal the world's keyhole. The Dalmatian's House is also nearby, down a narrow back alley which also leads to the Back Alley. The Hotel on the west side of the District is often invaded by Heartless, but can be entered through the Lobby; in addition, the Red Room and Green Room where Sora, Donald, and Goofy are briefed by Leon and Aerith can also be investigated further. The east side of town includes the entrance to Third District, as well as a set of roofs that can be climbed to reach treasures and a hidden entrance to a balcony in the Third District. Finally, the world's keyhole is hidden in the fountain just in front of the First District entrance.