The two cities where atomic bombs were dropped in Japan are Hiroshima and Nagasaki. The bomb was dropped on Hiroshima on August 6, 1945, followed by the bombing of Nagasaki on August 9, 1945. These bombings were pivotal in bringing about the end of World War II, leading to Japan's surrender on August 15, 1945. The immense destruction and loss of life from these events have had lasting implications for international relations and nuclear policy.