(National Historical Site)
To the north of Dazaifu City, there is a mountain called Mt. Shioji Ono Fortress.
This was built on its summit in 665 A.D. for the purpose of protecting the Dazaifu.
It consisted of a number of buildings surrounded by a mud and stone embankment, which was 8 kilometers in circumference.
All that remains today is part of the embankment and foundation stones of about 70 storehouses.
Mt. Shioji was originally called Mt. Ono, a name which often appears in Manyo poetry.
The name Shioji comes from the Shitenno (Four Deva kings) which were enshrined on the mountain.
Walk for one hour from downtown.
Visit is free.