Nagaoka-kyō
Nagaoka-kyō was the capital of Japan from 784 to 794. Its location was in Otokuni District, Yamashiro Province, corresponding to a 4.3 x 5.3 kilometer area spanning the borders of modern cities of Mukō and Nagaokakyō, Kyoto, the town of Ōyamazaki,... Wikipedia
Location: Mukō, Kyoto, Japan