Bit of a random question, but I'm a game dev who is making a bunch of 3D environments (both for experimenting and for fun). I figured I'd make some Harry Potter themed ones that I can walk through. I'm also very interested in the backrooms/liminal-spaces concept (i.e. games like Pools, Liminalcore, etc).

Are there any good settings in Harry Potter that you can suggest would make good liminal spaces to explore? Imagine a character fell into somewhere like the room of requirement while it was damaged and ended up trapped in a dreamy/warped/unfinished version of the wizard world.

For example...