The only catch is…you can only catch it twice a year!
The only sight more spectacular than Mount Fuji on a clear, cloudless day is a view of “Diamond” Mount Fuji, preferably also on a clear, cloudless day.
This term refers to a phenomenon which occurs twice a year, when the sun is aligned with Japan’s highest mountain, resulting in a glorious moment during sunrise or sunset when dazzling rays of light seem to be erupting from the peak of Mount Fuji.
One of the best places to catch this view for free is the Tokyo Metropolitan Government Office Observatory. If you missed the earlier sighting on Feb 2, you can catch it from there next on Nov 10.
Info: Tokyo Metropolitan Government Office Observatory Address: Tokyo Metropolitan Government Building No.1, 2-8-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo South Observation Deck: 9:30 a.m. - 5:00 p.m. (until 10:30 p.m. on the 2nd and 4th Monday of each month) North Observation Deck: 9:30 a.m. - 10:30 p.m.