According to Sun Jianjun, a culture official with the Alxa League (Prefecture), the Juyan ruins, including city sites, walls, pavilions, beacon fire relics, farmland and tombs which fanned out across the Ejin River basin, were first built in 102 B.C. during the reign of Emperor Wu of the Han Dynasty.
"It is one of the largest and best-preserved sites on China's ancient Silk Road," he said.
The site covers about 19,600 square kilometers. "For more than 2,000 years, it witnessed exchanges of China with the west, as well as communication between ethnic groups of north China," Sun said.
Sun's office will submit an application to the State Administration of Cultural Heritage before August 8, the 70th anniversary of the Inner Mongolia Autonomous Region.
UNESCO has acknowledged 1,052 world heritage sites across the globe. China has 50 such sites, including 35 cultural sites, 11 natural sites and four mixed sites, according to the UNESCO website.