In the anime, Elysion was first revealed to Chibiusa in her dream in episode 158. In that episode, Pegasus took Chibiusa (temporarily grown up because of a spell by PallaPalla) to fly over the devastated kingdom in order to reawaken her true dream. Mamoru was taken to Elysion in episode 165, when the Sailor Senshi were fighting with Queen Nehellenia. When he arrived, he was transformed into Prince Endymion and entered the castle. Helios explained who he was and apologized for not being able to protect the Golden Crystal.
In Act 46 of the manga, Pegasus saved Usagi and Mamoru from an attack by Zirconia and brought them to Elysion. They went to the shrine where Helios revealed the story of Elysion.
- Its name is similar to Elysium, a happy afterlife in Greek mythology.