Between the Lee Garden Chinese takeaway and the defunct Hornsey Halal Grocery, in a shabby block of converted Victorian houses, there's a door. There's no sign on the door, or any indication that anything out of the ordinary is behind it, but if you opened it this is what you'd see:
And if you walked down those stairs, past the stained glass window with its image of a woman swimming or diving, you'd reach the underground swimming pool:
Yours for 300 a week.
People always have reasons for doing things. I can't quite figure out what the reason was here.
Perhaps the incongruity is the point, perhaps whoever wanted it wanted to be able to walk out of one world and into another.