Sanchuu Goten

This stone wall was renovated several times, and it became present appearance.
The shape of the stone wall and the shape of the entrance look like tiger mouth suggest a guess that the present stone wall is similar to the modern castle.

There was a flat land of more than 3000 square meters at the top of the main gate, and this was an important place in the castle.
The building called Sanchu Goten, the structure is divided into upper and lower levels of the flat land and the stone wall.