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Historical capital of Japan From Wikipedia, the free encyclopedia
Nagaoka-kyō (長岡京) 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, and the Nishikyō-ku ward of the city of Kyoto. The ruins of the palace have been found in the Kaidecho neighbourhood of the city of Mukō and have been designated as a National Historic Site since 1964, with the area under protection expanded in 2016. [1]
長岡京 | |
Nagaoka Palace ruin monument in Mukō, Kyoto Prefecture | |
  Nagaoka-kyō  Nagaoka-kyō (Japan) | |
| Location | Mukō, Kyoto, Japan |
|---|---|
| Region | Kinai region |
| Coordinates | 34°56′36.6″N 135°42′11.4″E |
| History | |
| Periods | Nara - Heian period |
| Site notes | |
| Public access | Yes (no facilities) |
 | |
Nagaoka-kyō was built by order of Emperor Kanmu, who instructed that the new capital be established 40 kilometers north of Heijō-kyō in an attempt to overcome Heijō-kyō's various geographical weaknesses. Nagaoka-kyō, was situated at the confluence point of three major rivers, where the Katsura River and the Uji River, formed the Yodo River. A port called Yamazakitsu was established to unload goods from all over the country, where they were transferred to small ships. This made it easy to transport supplies efficiently by boat to Nagaoka-kyō, whereas Heijō-kyō could only be reached by land routes. In addition, Ogura Pond which existed at the time to the southeast of Nagaoka-kyō expected to be used as a logistics base. Archaeological excavations have revealed that almost every house in Nagaoka-kyō had a well, and measures were also taken to deal with sewage, both of which had been problems in Heijō-kyō. Running water from the side of the road was drawn into houses to flush away excrement. The natural spring water from the northwest of Nagaoka-kyō naturally flowed southeast through the city, which was built on a gentle slope, and this washed away filth into the river, keeping the city clean. The imperial palace was situated on a minor plateau 15 meters higher than the city, visually demonstrating the authority of the emperor, whereas Heijō-kyō was completely flat. Furthermore, the main seaport of Naniwa-tsu on the Seto Inland Sea has silted up and was increasingly unusable. The location of Nagaoka-kyō facilities the development of a new route via the Kanzaki River towards Lake Biwa an Omi Province.[2]
The new capital was also intended to rectify Heijō-kyō's various political weaknesses. Per the Shoku Nihongi, Emperor Kanmu consulted closely with Fujiwara no Tanetsugu on the location of the new capital. Nagaoka happened to Tanetsugu's family home, and a strong support base for the Fujiwara clan. Other reasons included a desire for distance from the increasingly politicized clergy of the great Buddhist establishments in Heijō-kyō, and a desire to improve relations with the economically powerful toraijin immigrant clans of southern Yamashiro Province from whom his mother was descended.
New Year's ceremonies were held at the Nagaoka-kyō palace on New Year's Day in 785, which means that the palace was completed only six months after construction of the capital began. The construction of the palace was undertaken over with consideration to opposition from the people of Heijō-kyō to the relocation of the capital. At that time, it was common for palaces to be built by demolishing the original structures and relocating the buildings to the new site; however, in the case of Nagaoka-kyō, the structures of Heijō-kyō were left intact in situ, and the Naniwa-kyō palace was relocated instead. Nonetheless, in September of the same year, Fujiwara no Tanetsugu was assassinated, and several officials associated with the great state temple of Tōdai-ji were implicated. Emperor Kanmu's younger brother, Imperial Prince Sawara, was also imprisoned and exiled because of his strong opposition to the move of the capital. The prince died while en route to his exile, still harboring a grudge. After his death, various incidents occurred in 792, such as famine and epidemics due to drought, the successive deaths of the Empress and other close relatives of Emperor Kanmu, arson of the main hall of Ise Grand Shrine, and the onset of illness of the Crown Prince. The following year, an onmyōji declared that these disasters were caused by the onryō, or vengeful spirit of Prince Sawara. Despite efforts at appeasing the prince's spirit, heavy rains followed by floods caused great damage to Nagaoka-kyō. Wake no Kiyomaro, the aristocrat in charge of flood control proposed relocation of the capital. A new site was selected to the northeast in 793 and the capital officially relocated to Heian-kyō in 794.[2]
After the transfer of the capital, the former Nagaoka-kyō area became the domain of Sugawara no Michizane, and the Nagaoka Tenman-gu Shinto shrine was constructed after his exile in 901. Although the name of "Nagaoka" survived as a place name, the actual site of the palace was lost for many centuries. The site of the palace was only re-discovered in 1954 and extensive archaeological excavations have been conducted since.[2]
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