The two Japanese cities that were destroyed by atomic bombs were Nagasaki and Hiroshima.
On August 6th and August 9th 1945 the United States detonated two atomic bombs over the Japanese Cities of Nagasaki and Hiroshima during World War II.
A uranium-fueled bomb that was nicknamed "Little Boy", was dropped on Hiroshima on August 6th 1945.
And on August 6th 1945 a plutonium fueled bomb that was nicknamed "Fat Man," was dropped on Nagasaki on August 9th 1945.
Hiroshima does not have harmful radiation levels today.
The residual radiation from the bomb decayed very quickly after the explosion, and the city has also since maintained radiation levels comparable to natural background radiation elsewhere.
The atomic bomb little boy was the first time a nuclear weapon was used in warfare. The bomb was dropped by the B-29 Superfortress bomber "Enola Gay" at 8:15 am Hiroshima time.
While it's a myth that the atomic bombs vaporized people, the extreme heat and radiation from the bombings did cause immediate death and horrific burns.
The intense heat from the explosion, which reached 7,000 degrees Fahrenheit on the ground, caused instant death and injuries, with many people being instantly killed or grievously wounded.