Other stories locate the route into the Other World indoors: in a wardrobe, in a looking-glass. In 'House of Leaves' the Other World intrudes darkly in the interstices of the house itself.
You don't have to believe in The Other World as a literal place to feel this. Nobody thinks Narnia or Wonderland are real like Australia. But at the same time I don't think it's a completely meaningless concept.
What do you think 'The Other World' means?
Wonderland: indoors or outdoors?
Wonderland: Good or evil? (tick as many as you like)
I have mentioned a few stories. I also think M John Harrison is very good at portraying The Other World as something very much to be avoided. Have you any favourites?