was the Capital of Japan during most of the Nara period, from 710 to 740 and again from 745 to 784. The imperial palace is a listed UNESCO World Heritage Site together with other places in the city of Nara (cf. Historic Monuments of Ancient Nara).
Empress Genmei ordered the Imperial capital moved from Fujiwara-kyà  to Heijà Â-kyà  in 708, and the move to Heijà Â-kyà  was complete in 710. Heijà Â-kyà  was modeled after Chang'an, the capital of Tang-dynasty China, although Heijà Â-kyà  lacked walls. In the city, merchants and traders from China, Korea, and India introduced various foreign cultures to Heijà Â-kyà  through the Silk Road. As a result, Heijà Â-kyà  flourished as Japan's first international and political capital, with a peak population of between 50,000 and 100,000. The overall form of the city was an irregular rectangle, and the area of the city was more than 25 km<sup>2</sup>.
The , the central street of Heijà Â-kyà Â, was located between Nijà Â-à Âji Minami and Sanjà Â-à Âji in modern Nara city. In 1984, the 220-meter stretch from the Heijà Â-kyà  ruins to à Âmiya-dà Âri to the south was designated as a National Historic Site. The avenue, which stretched 3.7 kilometer from north to south, from the Rajà Âmon Gate, the main entrance to Heijà Â-kyà  in the south, to the Suzakumon Gate, the main gate on the south side of the palace complex, was designed not only to function as a road, but also to accommodate the passage of foreign envoys, and its size and the surrounding streetscape were designed to be spectacular.
Excavations conducted since 1974 have clarified the route of the street, and it has been revealed that the width is about 74 meters between the centers of the east-and-west side gutters, and that the distance between the east and west embankments in Sanjà  is about 85 meters. The remains of a previous 23 meter wide road were also discovered below the Nara period road. In 2010, a portion of the Heijà Â-kyà  Suzaku-à Âji, measuring 70 meters wide and 210 meters long, was restored from the south side of Suzakumon Gate.
In the area of Heijà Â-kyà Â, there are ancient Buddhist temples, and some temples are also listed as a UNESCO World Heritage Site together with Heijà  Palace.
The year 2010 marked the passage of 1,300 years since the establishment of Nara Heijà Â-kyà Â. Commemorative events of the 1,300th anniversary of Nara Heijà Â-kyà  Capital (Japanese:å¹³åÂÂé·é½1300å¹´ç¥Â) were held in and around Nara Prefecture from April 24 to November 7, 2010. These events included special displays of national treasures and other cultural properties, walking events that explore famous places in Nara, and traditional events in various places throughout Nara.
ãÂÂãÂÂãÂÂAï¼ÂEntrance Plaza<br> ãÂÂãÂÂãÂÂãÂÂãÂÂâÂÂHeijà  Palace Site Tour Center<br> ãÂÂãÂÂãÂÂãÂÂãÂÂâÂÂCorporate Participation Hall<br> ãÂÂãÂÂãÂÂBï¼ÂHeijà  History Museum/Full-Scale Replica of Japanese Diplomatic Ship for Envoys to Tang China<br> ãÂÂãÂÂãÂÂCï¼ÂSuzaku Gate Plaza<br> ãÂÂãÂÂãÂÂãÂÂãÂÂâÂÂSuzaku Gate<br> ãÂÂãÂÂãÂÂDï¼ÂExchange Plaza<br> ãÂÂãÂÂãÂÂãÂÂãÂÂâÂÂMahoroba Stage<br> ãÂÂãÂÂãÂÂãÂÂãÂÂâÂÂExchange Hall<br> ãÂÂãÂÂãÂÂEï¼ÂHeijà  Palace Site Museum<br> ãÂÂãÂÂãÂÂFï¼ÂFront Courtyard of the Former Imperial Audience Hall<br> ãÂÂãÂÂãÂÂGï¼ÂSouth Gate Plaza<br> ãÂÂãÂÂãÂÂãÂÂãÂÂâÂÂTempyo period costume rental area<br> ãÂÂãÂÂãÂÂHï¼ÂHeijà Â-kyà  Hands-on Learning Plaza<br> ãÂÂãÂÂãÂÂãÂÂãÂÂâÂÂHeijà Â-kyà  Hands-on Learning Center<br> ãÂÂãÂÂãÂÂãÂÂãÂÂâÂÂMinistry of the Imperial Household<br> ãÂÂãÂÂãÂÂIï¼ÂExcavation Site Exhibition Hall<br> ãÂÂãÂÂãÂÂJï¼ÂEastern Palace Garden Plaza<br> ãÂÂãÂÂãÂÂãÂÂãÂÂâÂÂEastern Palace Garden
ãÂÂãÂÂãÂÂIkaruga and Shigi-san Areas (cf. Ikaruga, æÂÂ鳩ã»信貴山)<br> ãÂÂãÂÂãÂÂAsuka and Fujiwara Areas (cf. Asuka, é£Âé³¥ãÂȏ¤åÂÂ)<br> ãÂÂãÂÂãÂÂKatsuragi Area (èÂÂÃ¥ÂÂ)<br> ãÂÂãÂÂãÂÂYoshino Area (cf. Mount Yoshino, Ã¥ÂÂéÂÂ)<br> ãÂÂãÂÂãÂÂYamato Kogen Plains and Uda Area (大åÂÂé«ÂÃ¥ÂÂã»å®ÂéÂÂ)