This huge tomb, located in the Osaka area near the city of Sakai, is the largest in Japan and covers nearly 80 acres. It is over 1300 ft. long, nearly 100 ft. high and is surrounded by a three-ringed moat. According to legend, it was conceived and built by emperor Nintoku, who reigned, according to the Nihon shoki from 313 to 399. This attribution is questionable, as is Nintoku's eighty-six year reign.