Being the ancient military defence project, Great Wall is symbol and proud of China. It is convenient to visit Great Wall from Beijing. There are many sections of Great Wall around Beijing city. Badaling Great Wall is the site of the most visited section of the Great Wall partly because it is close to Beijing city and connected with urban area by expressway. This section of wall is the first section opened to tourists (in 1957) after reconstructed. Badaling Great Wall shows the Great Wall as it would have looked originally, and it does not look too new. That is another reason of why most travelers choose Badaling Great Wall. The Great Wall is a must for a China tour, while Badaling is a must for a Great Wall tour. Badaling Great Wall in Beijing is the best-preserved and most complete section among the various, hence the most popular, even among world leaders. You should visit it at least once in your life. The Changling Tomb Fifty kilometers away from Beijing lies Changling Tomb, the tomb of the third emperor of the Ming Dynasty, Zhu Di and Empress Xu. Among the 16 emperors of the Ming Dynasty, Emperor Zhu Di, also honored as Emperor Yongle, made the greatest contribution to the country and had the most far-reaching impact on history. During his time, the Ming Dynasty reached its peak. In 1409, Emperor Zhu Di built Changling Tomb. He was the first emperor of the Ming Dynasty to build a tomb. After that another 12 tombs were built. Changling Tomb is the largest and the most completely preserved of these tombs. Because of its grand ancient architecture, brilliant culture and long history, the site is one of the most significant attractions in Beijing.