I love the photo cover on my copy of the Poetics of Space.
It was that image as well as the title that and compelled me to pick it up at a used bookstore many years ago, and I loved reading it.
It encourages us to see the use of space, angles and lines and texture (e.g. a drawer in a bureau) as something beyond the physical.
But the cover, that photo, really stuck me, and now when I see interesting uses of human space, I shoot it.
These are some of the spaces that for whatever reason caught my attention.
I don't care much to explore the reasons.