Utrecht — and much of the Netherlands — is a flat place. Not a lot of hills or mountains, so sometimes I feel like I can tell you exactly where to find any hills or slight inclines that may exist in the city center. Most, if not all, are man-made.
One of the interesting things about most of these hills, though, is that they represent the location of some of the old city walls that protected the old city. In fact, this particular hill really is a leftover from the old walls. A small segment of the wall still exists just behind where I was standing when I took this photo.