On August 6, the world marks Hiroshima Day and the International Day of Nuclear Disarmament. On that day in 1945, the US Air Force dropped nuclear bombs on the Japanese city of Hiroshima. Each year on the same day, Hiroshima holds a commemoration ceremony.
Despite being shadowed by the tragedy, the cities have lived on. Take a look at the then and now of Hiroshima and Nagasaki – in our photo gallery.