There are 8 layers including the ground. The following is an example for use of each layer.
Ground: Castle Dark Haven and the DJ club.
1st layer 0512m: Spring Scenery
2nd layer 1024m: Summer Scenery
3rd layer 1536m: Autumn Scenery
4th layer 2048m: Winter Scenery
5th layer 2560m: Vacancy for special events or new developments.
6th layer 3072m: Vacancy for special events or new developments.
7th layer 3584m: Separation from the private rooms as well as the staff discussion room.