Suntory Old Whisky Osaka Castle Memorial Edition was released in order to celebrate Osaka Castle’s 400 year anniversary. It is a wonderful and very rare old bottle of Suntory’s blended Japanese malt whisky. Osaka Castle is a Japanese castle in Chūō-ku, Osaka, Japan. The castle is one of Japan’s most famous landmarks, and it played a major role in the unification of Japan during the sixteenth century of the Azuchi-Momoyama period.