Information is given in English, Japanese, Korean, and Chinese. You can see nice database.
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The 2005 world exposition will be held in Seto, Aichi Prefecture. You can see the information of this exposition and send your opinion or idea, here. From Dec 31st of 2000 to the end of 2001, a web exhibition is hold by Japanese Government. You can see extremely interesting webs. The online version of the popular magazine containing articles on Japanese culture, local events and so on.