I chose this as my favorite photo because it really brings out the depth of field. The series of benches next to one another creating a sort of depth perspective. The bench closest to the camera and down creates the field of dept. In this photo it is the background and the benches in the back that creates that depth of field.
The converging lines of the bench as they move away from the camera create a sense of depth. Even though we use the word depth in the expression depth of field, it refers to focus.