Goddess Cubes are objects from The Legend of Zelda: Skyward Sword. They are large blocks scattered across The Surface. When Link strikes one with a Skyward Strike, it will vanish, sending a ball of energy into The Sky. A corresponding Treasure Chest will then activate in the sky, turning from gray to a glowing purple and allowing Link to open it. When he receives the Goddess Whitesword, Link can unlock the ability to dowse for them.