In which more methods are expounded by which one may refine a dungeon to more sublime levels of confusion.
This isn't nonsense--this is logic!
From Innsmouth to Cthulhutech, a common phrase is “non-Euclidean architecture”. But what is it, and how can it be included in your games in a way that is interesting and fun?
You come upon a ruined building in the back section of a city park (or other out of the way area of the city). The ruins are fairly overgrown. All that is really standing is a doorway and its frame. If you pass through the opened door, you travel to a different world. If the door closes, there may not be a doorway back to get you back.