http://k-tai.watch.impress.co.jp/docs/news/1062995.html

Anyone visiting Tokyo this summer can check out the "SHARP Mobile Phone Museum" at Tokyo Station. According to the article the "Museum" is located on the inside of the ticket gate area of the Central Yaesu Exit (八重洲中央口). There is a sampling of phones from the year 2000 on, including the recently announced AQUOS R which is the mock up rather than an actual phone. The "Museum" will be around till the "end" of August.