NAGAOKA-KYō (長岡京) was the capital of Japan from 784 to 794.
Its location was reported as Otokuni District ,
Yamashiro Province ,
In 784, the
Emperor Kanmu moved the capital from Nara (then called
Heijō). According to the
In 785, the administrator in charge of the new capital, Fujiwara no Tanetsugu , was assassinated. The emperor's brother, Prince Sawara , was implicated, exiled to Awaji Province , and died on the way there.
In 794, Emperor Kammu moved the capital to Heian (in the center of the present-day city of Kyoto). Reasons cited for this move include frequent flooding of the rivers that had promised better transportation; disease caused by the flooding, affecting the empress and crown prince; and fear of the spirit of the late Prin