Located at No. 17 of Qian Hai Xi Jie, Prince Gong's Mansion is the largest courtyard in the world. The mansion covers an area of over 100 Mu (16.5 acres) and is as big as the Zhongshan Park. The mansion can be divided into the middle, east and west sections, comprising several smaller courtyards, which are all building in to the splendid Qing Dynasty (1644 - 1911) style.