Traditional site of Kusuba-no-Miya Palace in Osaka Prefecture
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1/1000 scale model of Fujiwara-kyō, held by Kashihara-shi Fujiwara-kyō reference room
Japanese Imperial kamon — a stylized chrysanthemum blossom
1/1000 scale model of Heijō-kyō, held by Nara City Hall
1/1000 scale model of Heian-kyō, held by Kyoto City Heiankyo Sosei-Kan Museum

April 30, 781 (Ten'ō 1, 3rd day of the 4th month (天安一年四月三日)): In the 11th year of Kōnin's reign, he abdicated; and the succession was received by his son Kanmu. Shortly thereafter, Emperor Kanmu is said to have ascended to the throne. During his reign, the capital of Japan was moved from Nara (Heijō-kyō) to Nagaoka-kyō in 784. Shortly thereafter, the capital would be moved again in 794.

- Emperor Kanmu

Nagaoka-kyō (Nagaoka Palace), 784–794 in the reign of Emperor Kanmu

- Capital of Japan

2 related topics

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Daidairi (大内裏, palace in the center) and the cityscape of Heian-kyō (miniature model at the Kyoto City Life-long Learning Center)

Heian-kyō

One of several former names for the city now known as Kyoto.

One of several former names for the city now known as Kyoto.

Daidairi (大内裏, palace in the center) and the cityscape of Heian-kyō (miniature model at the Kyoto City Life-long Learning Center)
Miniature model of the ancient capital Heian-kyō
Old map of Kyoto
Perspective Pictures of Places in Japan: Sanjūsangen-dō in Kyoto
Toyoharu, c. 1772–1781
Schematic diagram of Heian-kyō
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Emperor Kanmu established it as the capital in 794, moving the Imperial Court there from nearby Nagaoka-kyō at the recommendation of his advisor Wake no Kiyomaro and marking the beginning of the Heian period of Japanese history.

In fact, even after the seat of Imperial power was moved to Tokyo in 1868, since there is no law which makes Tokyo the capital, there is a view that Kyoto legally or officially remains the capital even today.

Chōdō-in (朝堂院) of Nagaoka-kyō (restoration model)

Nagaoka-kyō

Chōdō-in (朝堂院) of Nagaoka-kyō (restoration model)
Nagaoka Palace ruin monument in Mukō, Kyoto Prefecture

Nagaoka-kyō (長岡京) was the capital of Japan from 784 to 794.

In 784, the Emperor Kanmu moved the capital from Nara (then called Heijō-kyō).