In pictures: Hiroshima remembers

Sunday marks the 55th anniversary of the day a US aircraft dropped the Little Boy atomic bomb on the unsuspecting Japanese city of Hiroshima.

On 6 August 1945, the Little Boy atomic bomb devastated Hiroshima

All buildings within two kilometres of the epicentre were flattened

Buddhist monks were among those attending a memorial service on the eve of the anniversary at Hiroshima's Peace Dome

Visitors fold paper cranes - a symbol of peace since A-bomb child victim Sadako Sasaki first made them in 1955

Peace activists held a march past the A-bomb dome on the evening before the anniversary