Iseki san-jinja, Shinto shrine in Japan

Iseki san-jinja is a shrine in Tatsuno built in the nagare-zukuri style, featuring an asymmetrical roof that extends beyond the front entrance. The main building sits slightly raised on its foundation with a surrounding veranda that allows visitors easy access to the altar area.

According to shrine tradition, the shrine was founded in the second year of Emperor Sujin's reign at Kameyama in Ibo District, Harima Province, where Nigihayahi no Mikoto was enshrined by imperial command as Amaterasu Shrine. The deity Takemikazuchi was worshipped there from the beginning. The shrine burned in 1441 during the Kakitsu Rebellion and was later rebuilt. In 1555, the Yase family of Nakagaito added the deity Seoritsuhime, and in 1672, Wakisaka Yasumasa, lord of Tatsuno Castle, transferred the deity Takeminakata from Suwa Shrine in Iida, creating the three-deity shrine known as Iseki san-jinja.

The shrine's name comes from its three enshrined deities: Amaterasu-kuniteru-hiko-hoakari-kushitama-nigihayahi, Seoritsuhime and Takeminakata. Seoritsuhime was brought from Yamashiro's Yase district in 1555 by the Yase family, headmen of Nakagaito village; Takeminakata was invited from Suwa in Shinano in 1672 by Wakisaka Yasumasa, lord of Tatsuno Castle, to guard the castle's northwest. Each August 14 the grounds host the Sairen Bozu dance, a Bon memorial for the Akamatsu dead of the 1441 Kakitsu War and a Tatsuno intangible cultural property.

The main shrine has parking for 40 cars. From Hon-Tatsuno Station on the JR Kishin Line it is about 6 km, roughly 10 minutes by car; from Tatsuno Station on the Sanyo Main Line about 6 km, 15 minutes. The Okumiya stands about 4 km from the Nakagaito education campsite entrance, a walk of about 60 minutes. The Akatonbo community bus stops at Nakagaito, about 2 km or 20 minutes on foot from the shrine.

The shrine is not large, but there is a smaller building on the grounds dedicated to Inari, featuring fox statues and rice offerings. These figures give visitors from other parts of Japan a sense of familiarity with a nationwide spiritual tradition.