360° panorama by yunzen liu.
Click the image to open the interactive version.

Xi'an, anciently called Chang'an, is the provincial capital of Shaanxi Province of China. It was authorized by the UNESCO as a world-famous historic city in 1981.With a history of more than 3100 years, Xi'an is one of the four Great Ancient Capital Cities together with Athens, Rome and Cairo.The ancient city of Xi'an is a miniature of Chinese history. It is said that "Xi'an is the place for one to learn the five thousand years history of China."Erected during the Ming Dynasty (1638-1644), The City Wall of Xi'an is the world's largest and best-preserved ancient fortress. The rectangular city wall is 13.7 kilometers in circumference and has 5,984 crenels and 98 places for the garriosn troops to stay in. There is a gate in each of the four sides, and each gate consists of a main tower, an embrasured watchtower, a lock tower, and a compound. The city wall is surrounded by a moat and a ring road lined with trees and dotted with pavilions and kiosks to form the huge Around-the-City Park. The Xi’an Circumvallation site is located at the center of xi’an city with the form of a rectangular. The circumvallation, with its wall height of 12 meters, bottom width of 18 meters and top width of 15 meters, consists of 4 city gates: changle gate to the east, anding gate to the west, yongling gate to the south and anyuan gate to the north. Its east wall has the length of 2590 meters, west wall of 2631.2 meters, south wall of 3441.6 meters and north wall of 3241 meters. It was constructed on the basis of the tang imperial city and under the strategic consideration of defense. The thickness of the wall is larger than its height and is very solid that cars can run on it. The existing circumvallation was built during 1373-1378 with the history of more than 600 years. It is one of the most famous wall construction in China’s history after the middle ages as well as the most preserved ancient one in China.The panorama taken was at the walls of the south gate near.http://en.gmw.cn/2012-07/02/content_4458095.htmhttp://en.gmw.cn/2012-07/02/content_4458095.htm360-degree panorama photography by yunzeng liu

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