......Is there any chance that the structure itself is bigger at the top than the bottom? If you look at the building in the background and the windows, they don't look distorted. Either that or maybe I just need some more coffee to wake up this morning...
You are definitely maybe right.
Looking at the photo now, it doesn't look as whack as I thought it did when I first saw it years back.
I just put on screen rulers on the photo, as you pointed out, the building in the back ground is square, also, the light poles are vertical.
The horizontal ruler finds oddness in the lower support part of the tower, it's twisted. Upper slats are low on the left, lower slats are low on the right.
The tower was in San Francisco, many things have always been 'different' there. Maybe it was built that way intentionally, reverse taper on top, corkscrew twist on the bottom?
This photo is one of those I haven't been able to un-see. I suppose that makes it memorable and is memorable by itself one of the marks of a good photo? .