In principle, ichinomiya was granted to one shrine in one country, but there are cases where there are multiple ichinomiya in one country due to a battle for shrine status.
In the Heian period (794-1185), the dedication of remote shrines was avoided, and "Nijusha" was established as a new ranking of shrines, mainly those close to Kyoto.51 "Ichinomiya" was established from the late Heian to Kamakura periods, and is the most prestigious shrine in each country (Ritsuryo/Kokugyo).
Tokyo Daijingu Shrine was built as the far shrine of Ise Jingu Shrine. It is the "birthplace of the Shinto wedding ceremony" where Emperor Taisho performed the first Shinto wedding ceremony, and is very popular as a shrine with benefits for marriage.
The custom of worship at Izumo-taisha is "Ni-hai (two worships, four claps, one bow, and one bow). In addition, during the annual festival in May, the worshippers bow with eight beats of the hand.
The deity of Hiyoshi Shrine, Hie Shrine, and Sanno Shrine, which have about 3,800 shrines throughout Japan, is Oyakui, also known as "Hiyoshi God" or "Sanno Gongen. The deity is also the head deity of the Matsuo faith, which has Matsuo Taisha Shrine in Kyoto as its head shrine.
The head shrine of Hachiman worship, of which there are said to be more than 25,000 throughout Japan, is Usa Jingu Shrine in Oita Prefecture, which was built in 725.
Meiji Jingu Shrine usually attracts the largest number of visitors for Hatsumode (New Year's visit) in Japan. The number of visitors is approximately 3.2 million on the first three days of the year.
The Ise Jingu Shrine is basically self-sufficient in the production of food: rice is grown in the Jingu Jinden, vegetables and fruits are grown in the Jingu Gyoen, and salt is produced in the Yakisho.
Okinawa Prefecture also has the fewest number of shrines per 100,000 people, with 0.9 shrines per 100,000 people; Osaka (8.22) and Tokyo (10.68) are in second and third place, respectively.
Inari Shrine, Hachiman Shrine, and Tenmangu Shrine (Tenjin Shrine) are the three major Shinto shrines in Japan that have a particularly large number of affiliated shrines.
The Outer Shrine, officially named Toyoke Grand Shrine, enshrines the deity Toyoke, the patron god of agriculture, industry, food, clothing, and shelter.
The oldest shrine in Japan is said to be the Ogami Shrine in Sakurai City, Nara Prefecture. Because Mt. Miwa itself is the deity, there is no temple, and only a hall of worship has been erected.