I feel like most people are gonna choose based on the stuff they like, and while your likes and dislikes will be there a bit, it's based on your distortions.
That being said, I think mine would be a foggy forest
I blue castle(kinda) and the environment changes as you take steps and there will probably be copy's of me representing different parts or characters of mine and to fight my shadow you need to get some sort of keys to open a door(I guess) that leads to my shadow.