The subject here is the walkway. I was able to take this picture as it was raining, allowing me to capture the soft light from the lamps and the reflection on the ground. There are also a lot of vertical lines in this picture, which serve to guide the eye across the picture. I took a series of pictures around campus, but I felt that this one had the best sense of foreground/background, while maintaining a focus on the space rather than  a single object.