Possible hint at where Labyrinthos is located.

[KageTokage]

Also in addition to the artificial sun, we saw a dungeon in the showcase that seems to be simulating various seasons and also had some Sharlayan architecture.

It seems more likely to be the Mare Lamentorum dungeon as it has the same oversized furniture and green/red concept crystals in the walls that Anamnesis Aynder did.