Once in a very long while, a door does not lead to where it usually does.
One can cross a door and find themselves, instead, in a large and tastefully decorated tavern of sorts, on the fancy side of things. There is a bar with decorative bottles behind it, but no bartender. There are tables and a few shadowy nooks. There are stairs leading up and a few other side doors. And, off to the right of the entryway, there is a tall set of windows looking out into a black void, full of multicolored points of light blooming, exploding, and fading one after another.