Atomic Bomb Dome - Before
The building was constructed in 1915 as Hiroshima Prefectural Commercial Exhibition Hall. In 1921, the name changed to Hiroshima Prefectural Products Exhibition Hall and again in 1933 to Industrial Promotion Hall. Besides displaying and selling products from around the prefecture, it also served as a history and art museum. As the war intensified, these roles withered and various government offices took over the space, including the Chugoku-Shikoku Public Works Office of the Home Ministry and the Lumber Control Corporation.
Source: Hiroshima Peace Memorial Museum