Exhibition / text: 'Vivian Maier A Photographic Revelation' at Château de Tours. "Maier is a very good photographer but she will never be a great photographer." Photo: Vivian Maier 'September New York, NY' 1953
World's most photographed spiral staircase at the Vatican Museums. Designed by Giuseppe Momo in The stairs are actually two separate helixes, one leading up and the other leading down, that twist together in a double helix formation.