Amsterdam's canals are lined with more than 3,000 houseboats, most of which have postal addresses and use city electricity. If this picture showed only the canal and its houseboats, the eye of the viewer would go right to the "hole in the donut" -- the water. I needed a strong focal point and had to wait a while for it. Eventually, a boat full of tourists passed under the bridge I was standing on. A guide in the front of that boat made a perfect focal point for my shot -- his body language and authority come through even though he is quite small in size. He provides a good scale contrast to the crowded banks of the canal -- the point of my picture.