Nanjing, capital of China’s eastern Jiangsu province, is roughly 300km up the Yangtze River from the city of Shanghai. It was the national capital during part of the Ming dynasty. Many monuments and landmarks remain, including Zhonghua Gate (Gate of China), a preserved 14th-century section of the massive wall that contained the old city’s southern entrance.
Nanjing has served as the capital city of Jiangsu province since the establishment of the People’s Republic of China. It has many important heritage sites, including the Presidential Palace and Sun Yat-sen Mausoleum. Nanjing is famous for human historical landscapes, mountains and waters such as Fuzimiao, Ming Palace, Chaotian Palace, Porcelain Tower, Drum Tower, Stone City, City Wall, Qinhuai River, Xuanwu Lake and Purple Mountain. Key cultural facilities include Nanjing Library, Nanjing Museum and Nanjing Art Museum.
more details : https://en.wikipedia.org/wiki/Nanjing