DB Annex

I'm unable to convey what this image does for me.
If I had to choose one photograph, out of the thousands I've seen at the Library of Congress, that made the toil worthwhile, this would be it.
Lewis Hine took it in New York, NY in December 1916. All I know about it is what the caption says: it's an exhibit model - why it was made or by whom I have no idea.
It's scary, beautiful, numinous to me.
These details are from the 56 M. tif file: