This festival is for Kanda-myojin Shrine in Chiyoda-ward Tokyo, which is more than 1,300 years old. The festival itself has been held for more than hundreds of year as well. And it is one of the three great festivals in Tokyo and also one of the three great ones of Japan as a whole. The festival has been held every other year but the plan was suspended in 2011 due to the East Japan Earthquake, so this time it was held for the first time in the past four years.
The festival consists of several events and the climax are Shinko-sai(/神幸祭, gods parade festival) and Mikoshi-miyairi(/神輿宮入, moving shrines entering in the shrine’s place ), and the first is a parade of about 300 people clad in period costumes walking about 30 km in the shrines area of Kanda,Otemachi, Nihonbashi,marunouchi,and Akihabara. The latter one is peopel carry about 80 moving shrines to walk down in the town and latter on all one them come back to Kanda-myojin Shrine one after another.
Actually, I myself visited the shrine on the 12th when Mikoshi-miyairi was held and watched the great situations of huge passions and excitements of so many people there. Japanese traditional festivals are really splendid and even young people love and happily support them well.