The southern Japanese city of Nagasaki on Saturday marked 80 years since the U.S. atomic attack that killed tens of thousands and left people hoping their harrowing memories can help make their home city the last place to be hit by a nuclear bomb.

Nagasaki is marking the U.S. atomic attack on the southern Japanese city 80 years ago and survivors of the attack are working to make their hometown

The western Japanese city was levelled on Aug. 9, 1945, when the United States dropped a 10,000-pound plutonium-239 bomb, nicknamed “Fat Man”.