Prince Kung's Palace Museum near Houhai, is the largest palace from the Qing Dynasty. It was once the residence of Minister Heshen during the reign of Emperor Qianlong of the Qing Dynasty. Heshen is a famous corrupt official in Chinese history. After Prince Gong moved in, it was renamed Prince Gong's Mansion. Prince Gong's Mansion is a relatively well-preserved palace from the Qing Dynasty. There are more than 30 different types of buildings here. At one point, the garden in the mansion was one of the most exquisite mansion gardens in Beijing.