This poem is difficult to understand and I’m taking another shoot to get this post right.
The man is on the fire escape to watch the sunset.
I think this description is good enough because if I add anything more I’ll probably have to correct it again. No one can argue with this, though.
http://www.skfny.com/wp-content/uploads/MANHATTAN-SUNSET61.jpg
This is the scene that every can Harrisite see during zero band science lab (usually bio lab), except that it’s on the other side and it’s during sunrise, not sunset.
I think the poem is referring to this picture.