An information board tells the story of the east wall of the Site of Xanadu, which officially opened to visitors on July 15. Twenty kilometers northeast of Shangdu County in Inner Mongolia Autonomous Region, the Site of Xanadu has a history of more than 740 years. On January 2011, the State Council approved to apply to include the Site of Xanadu as a UNESCO World Heritage Site in 2012.[Photo/Xinhua]