The annual pilgrimage to Mecca, in Saudi Arabia, is something millions of people look forward to as an immensely spiritual experience. A main pillar of Islam, Muslims try to do it at least once in their lives, if they are physically and financially able. Saudi Arabia says 1.8 million people took part in Hajj this year. It coincided with a heatwave where temperatures reached more than 50C. Some 1,300 people died, many of those due to the intense heat. Three Muslims - from Kenya, the United States and Saudi Arabia – share their experiences of Hajj, including spiritual enlightenment, overcrowding, bereavement and sexual harassment.