Winter solstice comes but once each year, and with it the chance to see what has become known as‘Diamond Fuji’. You can get a good idea of what this might look like from the above photo, but for the chance to see the sun appearing to set right into Mt Fuji’s caldera with your own eyes you’ll have to get your mountain clothes on. The spectacle is visible from the summit of Mt Takao, but before you start fretting about crampons and industrial strength mittens, plan your trip to coincide with that the mountain’s cable car. Return journeys run until 6pm between December 20-26 to suit photographers and romantics alike. Just remember to wrap up warm.