A UNESCO committee has decided to register a group of ancient burial mounds in Japan's western prefecture of Osaka as a World Cultural Heritage site.
The decision came at a meeting of the World Heritage Committee of the UN cultural agency in the Azerbaijani capital of Baku on Saturday.
Japan's ambassador to UNESCO, Takio Yamada, and Osaka Governor Hirofumi Yoshimura who were in the audience rejoiced at the decision.
The Mozu-Furuichi Tumulus Clusters which span the cities of Sakai, Habikino and Fujiidera, consist of 49 mounds built between the late fourth and fifth centuries.
Among them is a keyhole-shaped tomb, which the Imperial Household Agency considers to be the mausoleum of Emperor Nintoku.
The mausoleum, which is officially called Daisen Kofun, is the largest keyhole-shaped tomb in Japan.
Experts say that those burial mounds represent high engineering technology in the ancient period, giving an important clue to understanding historical practices in Japan.
Japan will now have 19 World Cultural Heritage sites in addition to four World Natural Heritage sites.