The Tower of Eternity is located in the north-eastern point of the Forest of Jigramunt and rises up toward the sky, literally reaching above the clouds. The base of the tower is within a large cave and is guarded by hoards of Flame Demons and a few Thunder Dragons. Once Hector defeats enough demons, he will have the option to enter the tower or retreat. The tower is a fifty-stories building with nothing but enemies in almost every room, and there is no way to exit unless making use of either a Magical Ticket or a Memorial Ticket.
The Tower of Eternity has a twin tower called the Tower of Evermore. This other tower can only be reached if Hector has brought a Bird-Type Innocent Devil which has learned the Long Glide ability. To reach the next tower, Hector must command his Bird-Type to take him toward its roof, where he will then have to make his way down to ground level.
- Both the Tower of Eternity and the Tower of Evermore feature almost every enemy the player can encounter in the game. There are some exceptions, however. The following enemies are those who aren't present in any of the towers:
- Spirit Lv.32 is the only enemy that appears on both the Tower of Eternity and Tower of Evermore.
- The interlaced snake design seen on the floor of this level is based upon the "AURYN", a protective talisman from Michael Ende's 1979 novel The Neverending Story.