Oarai Isozaki Shrine located in Oarai-machi, Ibaraki Pref. is said to have been founded in 856, when political turmoil and frequent earthquakes confused people, Okuninushi no Kami descended to this place to cease the turbulence and build a peaceful nation. During the Eiroku era (1558-1569) all the buildings were destroyed by a war fire. Later in 1690, the reconstruction works stared under the order of Tokugawa Mitsukuni, and during the rule of his son, Tsunaeda, all the structures including the Main Hall, Haiden Hall (oratory) and Shin-mon Gate were completed. The present halls and the gate have existed since this reconstruction, which are considered to be the precious cultural properties to represent the early Edo-styled architecture. Enshrined Okuninushi no Kami is worshipped as the deity of business success, family safety, traffic safety, evil avoidance and bringing happiness, attainment of desires, and the deity of sake brewing and healing illness.