This paper aims to elucidate the conception of Hiroshima Peace Park Project (1950) as the core of the city by Kenzo Tange (1913-2005) in the postwar reconstruction period. In addition to Peace Memorial Park in the Nakajima district, he planned the cultural complex in the Motomachi district connected the Nakajima district by the axis through the Atomic bombed Dome. However, Tange realized only Hiroshima Children's Library in the Motomachi district. In this process, the external and the internal factors are integrated in the concept of the ‘factory of peace’ by Tange.
