The Old Summer Palace, known in China as Yuan Ming Yuan (the Gardens of Perfect Brightness), and originally called the Imperial Gardens, was a complex of palaces and gardens in Beijing. It is located 8 kilometres (5.0 mi) northwest of the walls of the Imperial City, built in the 18th and early 19th century, where the emperors of the Qing Dynasty resided and handled government affairs (the Forbidden City was used for formal ceremonies). Known for its extensive collection of garden and building architectures and other works of art (a popular name in China was the "Garden of Gardens", simplified Chinese: 万园之园; traditional Chinese: 萬園之園; pinyin: wàn yuán zhī yuán), the Imperial Gardens were destroyed by British and French troops in 1860 during the Second Opium War. Today, the destruction of the Gardens of Perfect Brightness is still regarded as a symbol of foreign aggression and humiliation in China. The Old Summer Palace is located just outside the west gate of Tsinghua University, north of Peking University, and east of the Summer Palace. The postal address is: 28 Qinghua West Road, Beijing, 100084.