The paper investigates the memorial ‘Wakato’ exposition at the opportunity to construct the bridge ‘Wakato-Ohashi’.After seaching histories on preparation of the exposition and after-use of the site space, we made clear some following results:1) We found caracteristics of technical method and budgetary steps for securing and maintaining the exposition site, and also influences on each of these own landscape.2) The present function in the exposition site and the connection through town space are influenceced by a decline of.