Within art, you can often find at least one of three perspectives, one point, two point or three point. These perspectives can be used separately or all together to get different movements and balance in a piece. In this picture, the planes in the background are one point, the shapes in the middle ground are two point and the fountain in the fore ground is three point. I did this to give the picture some variety and a feeling that you are looking from above down at the park.
In the following image, I used all tree of these perspectives in one image.