In 1992, a photograph of Princess Diana alone on a bench in front of the Taj Mahal became one of the most famous photos in the world. Anwar Hussein was a photographer who documented the lives of the British royal family. His first visit to the Taj Mahal was to photograph Prince Charles in 1980. He tells Gill Kearsley about his relationship with the royal family and about taking the iconic photograph. (Photo: Princess Diana alone outside the Taj Mahal. Credit: Anwar Hussein/Getty Images)