 The windows that remained reflected the light of the sky, the sun and the moon, producing images from certain angles that were completely a function of space and light—the dark interior space of the prison, and the light shining through the optically reflective space of the remaining windows.The pictorial space of each image was directed at different points on the ground where the sun reflecting in the windows was visible.The viewing angles changed throughout the year as the sun's elevation in the sky changed.