See 'Diamond Fuji'

The phenomenon known as 'Diamond Fuji' occurs when sunset and sunrise align perfectly with the peak of Japan's highest mountain, creating a mysterious, jewel-like image. This twice-a-year occurrence is best viewed from Sunshine City's 60th-floor observatory, with its 360-degree views of Tokyo and surroundings. The exact date for the first 'diamond' is January 27, but the effect can be seen a few days before and after that as well. Don't miss the opportunity completely though - you'll have to wait until the middle of November for the next alignment.