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.
Elden ring, shaman village
https://eldenring.wiki.fextralife.com/Shaman+Village
I never went there in my playthrough! I’ll have to do that today.
It’s in the dlc, cool place with peaceful music.