This is the only building to survive near ground zero, now preserved as a World Heritage Site. The bomb was set to go off at 600 m above ground for maximum destruction, and completely annihilated everything within 2 km of ground zero with the exception of this building. The bomb was dropped at 8:15 in the morning and the breakfast cooking fires burned whatever the bomb left outside the 2 km radius. 140,000 people died, the vast majority civilians. The polite Japanese history of why the U.S. decided to drop the Bomb on Japan: "With Japan in an extremely weak position, the United States was considering the following ways of bringing the long war to an end: invade the Japanese mainland, ask the Soviet Union to join the war against Japan, assure continuation of the emperor system, of use the atomic bomb. The U.S. believed that if the atomic bomb could end the war, Soviet influence after the war would be restricted and domestically the tremendous cost of the development would be satisfied."