A cleric stokes the coals the "sacred eternal flame" at the Zoroastrian Fire Temple on June 1, 2014 in Yazd, Iran. Zoroastrians, also known as fire worshipers, come from around the world to visit the sacred site. The fire in the temple is said to have been burning since AD 470, transferred to Yazd in 1474 and to its present site in 1940. (John Moore/Getty Images) #