The most unusual building at the Grand Canyon is the viewing tower designed by architect Mary Colter for the Fred Harvey Company. She built it out of hand-picked stones designed to give the tower an ancient look. It has been photographed by millions of visitors since it opened in 1933, so instead of shooting the exterior, I focused instead on its most architecturally impressive section – the tower interior. Using a 24mm wideangle lens turned vertically, I photograph its soaring balconies and amazing dome, covered in Hopi art. The dizzying view upwards creates an almost mystical atmosphere, as hundreds of prehistoric Indian images inundate the viewer with an overwhelming sense of the Southwest.