Completion Designer Architectural style Structure　　　　　　 Dome structure Use 　　　　　　　　　　 April 1915 Jan Letzel（Czech architect） Secessin Bricks and mortar exterior with stone finish, three stories with one five-story section （hall with staircase in front center of building） major axis: 11m（approximately） minor axis: 8m（approximately） height: 4m（approximately） copper plate roofing Exhibits and sales of Hiroshima Prefecture products; Cultural events such as Hiroshima Prefectural art shows and fairs