The early 20th century iron staircase still serves visitors to this museum, which occupies the structure that was once the territorial and state capitol of Arizona. Most visitors would never see this sight – the base of the stairwell is hidden away in a storage room. However the door to the storage room was left open, making it possible for me to make this image. I used a new wideangle zoom lens for this image, set at its widest focal length: 7mm, which is equivalent to 14mm in 35mm terms on my camera. This superwide focal length expands the field of view to cover not only the staircase, but also some empty storage shelves at its base, which anchor the image. The ornate iron railings that lead the eye through the image define the character of the building itself, and the wide 14mm field of view intensifies the dizzying impact of the scene.