Gozanoishi Shrine, Shinto shrine on the shore of Lake Tazawa in Semboku, Japan

Gozanoishi Shrine is a place of worship on the shore of Lake Tazawa in Semboku, Akita Prefecture, Japan. The grounds include a flat lakeside rock, a sacred spring, a smooth stone called the mirror rock, and a single tree trunk from which seven different tree species grow.

The shrine received its current name in 1650, when a local lord named Satake Yoshitaka visited and rested on a flat stone by the water, giving the site its name after that rock. The current building was erected in 1911 by the Sannojo family, who brought together several smaller shrines from the surrounding area into one.

A bright red torii gate marks the entrance to the shrine and is visible from the lake, making it a reference point for visitors arriving by boat or on foot. Inside the grounds stands a bronze statue of Tatsuko showing her lower body as a dragon, a direct visual reference to the legend of her transformation into a lake goddess.

The shrine is accessible from Tazawako Station by taking the local Tazawako Loop Line bus, which stops at a dedicated stop near the entrance. The grounds are best explored on foot, since the main features are connected by a short path along the lakeshore.

The shrine offers a type of fortune slip called omikuji that starts as a blank piece of paper and reveals its message only when floated in water from the sacred spring. That water comes from the same source that, according to local legend, Tatsuko drank from before she became a dragon.