Japanese Emperor Akihito has celebrated his 80th birthday, waving to a huge crowd from a balcony at the Imperial Palace in Tokyo.
Japanese Emperor Celebrates 80th Birthday

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Japan's Crown Princess Masako waves to well-wishers who gathered to celebrate Japan's Emperor Akihito's 80th birthday at the Imperial Palace, Tokyo, Dec. 23, 2013.

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Well-wishers wave Japanese national flags to celebrate Japan's Emperor Akihito's 80th birthday at the Imperial Palace in Tokyo, Dec. 23, 2013.