Atlantis by Ellie Goulding is a haunting and evocative song that delves into themes of lost love, nostalgia, and emotional devastation. In the song, Ellie Goulding uses the metaphor of Atlantis, the mythical lost city, to express feelings of something precious that has been irretrievably lost. Key themes include heartache, the passage of time, and the longing for something that once was but can never be reclaimed. Particularly poignant moments in the song come through in lines that hint at the overwhelming sadness and the sense of drowning in memories that can no longer be revived.