Sitting atop a gently elevated hill overlooking the Sea of Japan, Suwa Shrine is revered as the guardian shrine of Yahashi. Historically called Suwa Daimyōjin, it is said to have been founded in the 3rd year of the Jōgan era (861) when Emperor Seiwa invited the deity from Suwa in Shinano Province. The shrine was rebuilt in the 1st year of the Meireki era (1655) and became known as Suwa Shrine in the 5th year of the Meiji era (1872). It is affectionately called "Osuwa-san" by the local parishioners.