OTSU--A 30-meter-long stone wall and a moat were unearthed at the site of the castle belonging to the 16th ... The Otsu city government surveyed around 900 square meters of land in October for ...

A 400-year-old stone wall once part of Edo Castle, discovered only last year at what is now the Imperial Palace in Tokyo, is likely the castle’s oldest existing remnant ever unearthed ...