Emperor ??ng Kh?nh (also known as Nguy?n Ph?c ?ng K?; 19 February 1864 - 28 January 1889) was the 9th Emperor of the Nguy?n Dynasty of Vietnam. He reigned 3 years between 1885 and 1889, and was considered one of the most despised emperors of his era. Hue was the imperial capital of the Nguyen Dynasty between 1802 and 1945. The tombs of several emperors lie in and around the city and along the Perfume River. Hue is a UNESCO World Heritage Site.