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.
The shrine grounds generally consist of a torii gate as the entrance to the shrine, a hand-watering basin, guardian dogs, a hall of worship, a main hall of worship, and regent shrines.
The hall of worship is the place where rituals and worship services are held, and in some cases also serves as a dance hall, kaguraden, and shrine office. Some shrines, including Ise Jingu, do not have a hall of worship.
The basic architectural style of shrine pavilions is the gabled gabled roof, which can be broadly divided into the "Shinmei-zukuri" style, which has its roots in the Ise Jingu Shrine, and the "Taisha-zukuri" style, which has its roots in the Izumo-Taisha Shrine.
Originally white in color, torii gates are said to have been painted red to ward off evil spirits in Buddhism as a result of the syncretization of Shintoism and Buddhism.
There are various theories as to the origin of the torii, such as that the perch of a bird was placed in front of the shrine in reference to the "everlasting long-nesting bird" that appeared in the Kojiki (Records of Ancient Matters) to lure Amaterasu out of Ama-no-Omikami (Amaterasu) from the Ama-no-Iwato.
Since the center of the torii gate and the approach to the shrine is considered to be the path of the gods, it is customary to pass by either side of the gate.
The meaning of the tama gravel on the approach to shrines is that "tama" is the same as "tama" in the word "mitama," meaning beautiful, and that it is spread to keep the sacred place clean.
The gojintai, the central object of a shrine, is also called "yoriyoshiro," and the place or object where the deity dwells varies from shrine to shrine.
The most famous of these is the "three sacred objects" that Ninigi no Mikoto is said to have received from Amaterasu at the time of his descent from heaven in the "Chronicles of Japan.