Heijo-kyo Sakyo Sanjo Nibo Palace Garden Ruins is an archaeological site in Sanjo-oji, Nara City, Nara Prefecture, preserving the remains of an ancient Japanese garden dating from the Nara period (710–794). It is one of the rare surviving sites that reveal how gardens were designed and enjoyed more than 1,200 years ago.
Since 1975, the Nara National Research Institute for Cultural Properties has conducted five archaeological investigations at the site. These excavations uncovered the garden pond, evidence of its original landscaping, and the remains of surrounding buildings, offering valuable insights into the lives and aesthetic traditions of people in ancient Japan.
The site holds two of Japan’s highest cultural designations: Special Historic Site and Special Place of Scenic Beauty. These honors reflect its exceptional historical, archaeological, and artistic importance.
The garden’s central feature is a relatively shallow pond with a gently winding, S-shaped outline. Stones of different sizes line the pond, while rounded pebbles cover its bottom. Archaeologists have also identified traces of water flow, helping researchers understand how the pond may have functioned in its original setting.
The winding design has led to the suggestion that the garden may have been used for kyokusui-no-en, an elegant courtly gathering known as a winding-stream banquet. During such events, participants composed poetry beside a flowing stream or winding watercourse, sometimes enjoying refreshments as a cup floated along the water. Although the exact use of this particular garden remains uncertain, its layout offers clues to the refined leisure activities of the aristocracy.
Roof tiles resembling those found at Heijo Palace were also discovered at the site. Based on this evidence and the character of the garden, researchers have proposed that the complex may once have been an imperial villa or the residence of a member of the imperial family.
The name Miyaato Teien, meaning “Palace Garden Ruins,” reflects this theory about its possible origins.
On October 27, 1978, the garden was designated a Special Historic Site of Japan. Its importance as a rare example of ancient Japanese landscape design was recognized further on May 6, 1992, when it also received the designation of Special Place of Scenic Beauty. Additional areas were incorporated into the protected site in 1985 and 2008.
It is exceptionally rare for an ancient garden to hold both designations. In addition to this site, only two other ancient garden sites in Japan are noted for this dual status: the East Palace Garden within the Special Historic Site of Heijo Palace and the garden at Motsuji Temple in Iwate Prefecture, which is included within the Special Historic Site of the Motsuji Temple precincts and associated shrine ruins.
These designations recognize both the garden’s value as an archaeological record and its importance as a work of landscape art.
The garden has been developed to allow visitors to see the excavated pond remains in an exposed display, making the original layout easier to understand. Some buildings from the Nara period have also been reconstructed, helping visitors imagine the setting in which the garden once flourished.
Rather than presenting only a modern recreation, the site preserves archaeological evidence that reveals the garden’s original form. It offers a rare opportunity to appreciate the sophisticated landscaping techniques and refined aesthetic sensibilities of Japan’s ancient court culture.
Heijo-kyo was established as Japan’s capital in 710, when the capital was transferred from Fujiwara-kyo to the Nara Basin in what is now Nara Prefecture. Its urban design was strongly influenced by Chang’an, the capital of Tang China, reflecting the close cultural and diplomatic connections between Japan and the Asian continent at the time.
At the center of the city stood Heijo Palace, the imperial residence and principal administrative complex. The city was arranged in a grid pattern, with Suzaku Avenue running through its center and dividing it into the eastern and western districts. Streets running north to south and east to west organized the urban area into orderly blocks.
Heijo-kyo extended approximately 4.3 kilometers from east to west and served as a major center of government, commerce, and culture during the Nara period.
The Nara Basin had already been an important region for centuries. Large burial mounds, including those of the Saki Tatanami Kofun Group, were constructed from around the mid-5th century, reflecting the area’s connections with the early imperial court. Religious institutions also developed in the region, including Kofukuji Temple and Omiwa Shrine.
During the 8th century, Buddhist culture flourished under imperial patronage. Major temples such as Todaiji and Hokkeji were established, and the construction of the Great Buddha at Todaiji became one of the defining achievements of the period. Heijo-kyo developed into a center of Buddhist learning, religious practice, art, and architecture.
Plans to move the capital to Heijo-kyo began during the reign of Emperor Monmu in 707. In 708, Empress Genmei formally issued the order to establish the new capital, and the relocation took place in 710. Although only some palace facilities and other structures were initially ready, residences, temples, and other buildings were gradually added as the city developed.
In 784, the capital moved to Nagaoka-kyo, bringing Heijo-kyo’s role as the political center of Japan to an end after approximately 74 years. Although a later attempt was made to return the capital to Nara, it was not realized. The former capital subsequently became known as Nanto, meaning “the southern capital,” and continued to hold religious and cultural importance.
Heijo-kyo Sakyo Sanjo Nibo Palace Garden Ruins preserves valuable evidence of the advanced landscaping skills and refined court culture of the Nara period. Its rare dual designation as a Special Historic Site and Special Place of Scenic Beauty underlines its importance among Japan’s cultural heritage sites.
A visit offers an opportunity to look beyond the famous temples and monuments of Nara and discover the quieter world of ancient gardens. By exploring the pond remains and reconstructed features, visitors can gain a deeper appreciation of the elegance, artistry, and cultural sophistication of Japan’s early imperial capital.