Each set has multiple doors to the outside world. Because many questions are about merging the different sets. There are already games of the Overlook Hotel to play, where the sets are connected.
To help someone build their game, I made an inventory of all doors, portals and corridors for a number of sets.
First of all, the Lobby where the story begins.
Behind the doors you can see the outer wall of Stage 4, but with flats in front of it.
Here you can see the outside wall of Stage 4
this service door opens onto the office corridor
Right behind the curtains is the passage to the Goldroom.