Yes, it is. I'm not sure if it's clear from my photo, but this is a real passway (not a picture, not a rendering, but a real place you walk through). The visitor is invited to spend some time inside it to experiment what the author called "chromosaturation", where your eyes start to lose the ability to tell what colour you were seeing. It was hypnotic (and, sincerely, a bit sickening 😆)