Prince Gong's Mansion, also known as the Prince Kung Mansion, is a museum and tourist attraction located in Xicheng District, Beijing, just north of the Shichahai Lake. It consists of large siheyuan-style mansions and gardens. Originally constructed for Heshen, an official renowned for being the most corrupt official in Chinese history, it was later renamed after Prince Gong, a Manchu prince and influential statesman of the late Qing dynasty, who inhabited the mansion in the late 19th century.

Xicheng is a district of the city of Beijing. Its 32 square kilometers (12 sq mi) cover the western half of the old city, and has 1,106,214 inhabitants. Its postal code is 100032. Xicheng is subdivided into 15 subdistricts of the city proper of Beijing. The former Xuanwu District was merged into Xicheng in July 2010.