In the building that I work in now, there are a series of super confusing elevators. There are three different pairs of elevators and they all terminate at different floors or sections of the building; depending if you want to go outside, to the second floor or the mall.

If you can figure out which elevator to go on, you might be presented with this problem:

Usually parking is below the pedestrian floors but in this case they are above. So P3 and P4 make sense as they are the third and fourth floors, until you see P2 which is actually below the first floor. Unsurprisingly many people get confused and go up from P3/4.

If that is not confusing enough, the P2 button actually only works on one of the two elevators (because only one elevator extends down to that floor). If you didn’t know any better, you would just think its broken.