This heart-wrenching museum documents the bomb and its aftermath, complete with scale models of" before" and "after", melted children s tricycles and a harrowing recreation of a post-blast Hiroshima street.The first floor describes the events leading up to the bomb and attempts to give a sense of what Hiroshima was like before the war.The second floor contains a number of displays and artifacts related to the day of the bombing.Some of these are extremely graphic, evocative and-consequently-disturbing.The rest of the museum describes the pos-war struggles of the hibakusha(bomb survivors)and the state of nuclear weapons in the world tday.