Millennium Park is a wonderful urban location for photography. The Crown Fountain is but one of many outstanding settings. Two large walls of glass blocks show giant images of faces by day, and glow color by night. People do very interesting things in the line of posing for pictures with friends and/or family. This young woman decided to spontaneously wade into the water by the south tower to strike this pose right within the framing of the tower's structure. I was an innocent bystander who saw the shape and frame unfold spontaneously, and took the opportunity to capture it.