Kamimeguro Hikawa Shrine is a fairly ordinary urban shrine, its precincts sandwiched between high buildings and lacking in old, impressive trees. “Kamimeguro” is the name of the area, and the “kami” just means “upper”; it is, apparently, not connected to the word for Shinto kami, although quite a lot of people have thought it was. (The evidence relies on technical arguments about sound changes in Japanese in the eighth century; apparently the two “kami”s originally had different “i” sounds. Not everyone is completely convinced.)
The Hikawa shrines are only found around Tokyo, and the overwhelming majority are in Tokyo and Saitama prefectures. There are one or two in the other adjacent prefectures, and none further away. This sort of situation is fairly common in Shinto; particular shrine groups tend to be found in a local area. Indeed, about the only shrine group that is truly national is the Hachiman group; even Inari seems to have a significant bias towards eastern Japan. This does mean that you cannot walk around visiting the shrines in one area to get a sense of which types of shrine are important; that will just tell you what is important near you.
The reason I was talking about shrine groups rather than kami is that the main kami of the Hikawa shrines is Susano-o no mikoto, the younger brother of Amaterasu ÅŒmikami, who is enshrined in many other places as well. For example, he is the main kami of the Gion shrines, which tend to be found in western Japan, and of several shrines in Shimane prefecture, on the Japan Sea coast. Indeed, “Hikawa” is thought to come from the Hi river in Shimane, which is closely associated with Susano-o’s legends. However, traditions and festivals seem to be more often associated with the shrine type than directly with the kami, so it is generally more useful to keep track of the shrine type.
An additional complication is that sometimes the kami is not the same in all shrines of the same type, and even when it is that is sometimes just a result of Meiji period rationalisation. Another result of such rationalisation can be seen at this shrine. As well as Susano-o, the shrine enshrines Amaterasu and Tenjin, Sugawara no Michizane. Now, while Amaterasu is connected to Susano-o, Tenjin is not, and is only here because he was moved from another local shrine, one that was being closed down, in the Meiji period.
The shrine precincts also include an Inari shrine and a Sengen shrine. The Sengen shrines are dedicated to the kami of Mount Fuji, and thus are only common in areas from which Mount Fuji can be seen. The presence of other shrines in the shrine grounds, called sessha (for shrines to kami closely connected to the main kami, in theory) or massha (for other kami), is quite common. The Grand Shrines of Ise cover 125 shrines if you add up all of the sessha and massha, although some have special names in that case. Some sessha and massha are even outside the shrine grounds, sometimes quite a long way away. These days, I think that the key point is that the sessha and massha are not independent religious corporations; they are administered by the corporation of the main shrine.
Because of my route, I entered the shrine through the rear entrance, and left from the front. The stone steps at the front are almost two hundred years old, and lead to and from the ÅŒyama KaidÅ, but as soon as you reach the top of the steps, the fact that you are in the heart of Tokyo is inescapable. There’s something about triple-decker roads that destroys any sense of peaceful isolation.