Culture Day (Bunka no Hi) is a National holiday in Japan on November 3rd. Culture Day as the name implies is a celebration of culture. It's actually three commemorations at once. Besides culture, November 3rd marks the date when the post-war constitution was publicly announced in 1948. The real roots of the holiday though is the birthday of Emperor Meiji (1852-1912). Meiji oversaw the modernization of Japan and a return of governing power to the Imperial Court which had not ruled since the 12th Century.
At Meiji Shrine in Tokyo there are a number of cultural activities as a result. Behind the main shrine, a number of martial arts demonstrations are held. One can a variety of weapons like katana, naginata, and spear. Also you can see yabusame - mounted archery - and old fashion matchlock guns including a small cannon.