A unique windw for sure. I wish I could see more of it though, specifically, more dark space between the corner of the window and the bottom of the frame would be nice. I think your intended subject here was really the ground outside the window....or at least, that is the impression that this composition generates for me.

I've seen lots of 'out the airplane' windows, and this need a lot more to have impact.

I have come back to this image several times without commenting. There is something about it that appeals to me, I really like the framing and the simplicity. Some people might think that it is more 'looking through' but because of how it is framed is says window to me.