The Nagasaki Atomic Bomb Museum (長崎原爆資料館 Nagasaki Genbaku Shiryōkan) is in the city of Nagasaki, Japan. The museum is a remembrance to the atomic bombing of Nagasaki by the United States of America 9 August 1945 at 11:02:35 am. Next to the museum is the Nagasaki National Peace Memorial Hall for the Atomic Bomb Victims, built in 2003. The bombing marked a new era in war, making Nagasaki a symbolic location for a memorial. The counterpart in Hiroshima is the Hiroshima Peace Memorial Museum. These locations symbolize the nuclear age, remind visitors of the vast destruction and indiscriminate death caused by nuclear weapons, and signify a commitment to peace.

The Nagasaki museum was completed in April 1996, replacing the deteriorating International Culture Hall. The museum covers the history of the event as a story, focusing on the attack and the history leading up to it. It also covers the history of nuclear weapons development. The museum displays photographs, relics, and documents related to the bombing.

The atomic bomb was developed by scientists working under the Manhattan Project. The project was granted funding on December 6, 1941, with American leaders aiming for a new invention that would serve as a wartime weapon. The decision to drop an atomic bomb on Japan had been made by 1943, and a shortlist of candidate target cities was in place in 1945. At the time, it was argued that an atomic bombing would bring about a more rapid end to the war. Hiroshima, the first target, was selected to show the power of America's new weapon. The second bombing, of Nagasaki, was intended to demonstrate that the USA had a large arsenal. At 11:02 A.M. local time on August 9, 1945, the atomic bomb, nicknamed Fat Man as its code name by Robert Serber in the United States (after Sydney Greenstreet's character in The Maltese Falcon) was dropped on Nagasaki, forever changing the city's landscape. A mushroom cloud rose to an altitude of 45,000 feet above the city.

Within the museum is a history of the city before the bomb was dropped. The hypocenter of the explosion was the Urakami district, which was a traditionally rustic and isolated suburb. However, the population soared after the 1920s when the district was chosen as the site for munitions factories. An industrial zone was quickly created. Additionally, the Urakami district was home to the Nagasaki Medical College. When the bomb was dropped at 11:02 A.M. on August 9, 1945, the 20 neighborhoods within a one-kilometer radius of the hypocenter were completely destroyed by the heat flash and blast winds generated by the explosion. They were then reduced to ashes by the fires which followed. Within 2 km of the hypocenter, roughly 80% of the houses collapsed and burned. When the smoke cleared, the area was strewn with corpses.

Reconstruction of the city proceeded slowly. It was not until the latter half of 1946 that the first emergency dwellings were provided to the communities. The need for buildings far surpassed the availabilities. As late as 1950, applications for corporate dwellings exceeded the availability ninety times. The national government of Japan created a war disaster reconstruction plan in November 1945 which projected a city concept which would abandon the old war industries and focus instead on a revival of foreign trade, shipbuilding, and the fishing industry. Today, the city is considered a peace city and has pledged itself to the mission of world peace. (WIKIPEDIA)