Guozhuang was built in the Qing Xianfeng period (1851~1861), as the villa of Song Duanyou, after the fall of the Song family, the Qing Guangxu period (1875~1908) belonged to the silk industrialist Guo Shilin, so it was called "Guozhuang". After that, the garden was abandoned, and the building was used for other purposes. In October 1991, Guozhuang was opened to the public after a comprehensive renovation. The overall plan of Guozhuang is rectangular, covering an area of 9,788 square meters, with 29.3% of the water surface, divided into two parts: the house "Jingbiju" and the garden "one mirror in the sky". Guozhuang is the most private garden with the characteristics of Jiangnan classical gardens in the West Lake garden.