This is a photo of the Lincoln Memorial in Washington D.C. This past spring break, I went on an East Coast College Tour, and we got to see many historic monuments and locations, and I felt that this was the most iconic of all these locations.
This was a photo taken on-campus at MIT, and I actually thought of it as the visual metaphor of a mathematician's brain when he thinks: just full of numbers and slightly cluttered.
I see this photo as a visual metaphor for Sensei himself: being closed off to others around him, even his own wife. I took this photo during the air riflery season when my friend and I were fooling around after practice, and I thought that it matched well with the theme of the novel.