Rules: only places that don’t exist, so no “NY from Spider-Man” also if you can limit to a building or little town, not an entire city or map.
My pick: The Spencer Mansion from 1996 Resident evil. I always loved that place. Of course without the creatures.
The fictionalised Celeste Mountain in Celeste. Though it is a real location, the real place doesn’t have dashing, abandoned cities, hotels and temples, feathers that allow you to fly, or anything else the game has.
So, I’d like to see things I ain’t ready to see. That’s kind of my life story.