Kanda Matsuri is the reason this shrine's name travelled far beyond its own neighbourhood. It is counted among the three great festivals of Edo, and it earned a remarkable nickname: Tenka Matsuri, the festival under heaven. The reason is oddly literal. The festival's floats were allowed inside Edo Castle so that the shogun could view them, which means a parade of neighbourhoods rolled through the ruler's own residence. Two more details are worth holding on to. First, the shrine describes itself as the tutelary deity of 108 town associations, a list that reaches from Kanda and Nihonbashi to Akihabara, Ōtemachi, Marunouchi, and the former Kanda and Tsukiji fish markets. That is an enormous spiritual territory for a single shrine. Second, the festival changed with the city. In the Meiji era, as electric wires spread overhead, the number of tall floats dropped sharply. The music survived differently: the Kanda bayashi ensemble is designated an intangible folk cultural property of Tokyo. One more strand, offered as tradition rather than as firm record: Tokugawa Ieyasu is said to have prayed here before the Battle of Sekigahara in 1600, and, so the story goes, won on the very same day that the Kanda festival was being celebrated.