The Citadel with the Forbidden City, actually the palace compound of the Nguyen Dynasty, which was the palace from 1802 to 1945, was modeled after Beijing and was declared a UNESCO World Cultural Heritage in 1993.
At the beginning of the 19th century, Emperor Gia Long built a palace on the north bank of the river of perfumes based on the Chinese model. The Purple Forbidden City was accessible only to the Emperor and to a few confidants. The relatives, concubines, and eunuchs resided in the Kaiserstadt, which is about one square kilometer in size, surrounded by a wall and a ditch. In the six-square-kilometer citadel, the court lived.
Only ruins can be seen today from the Forbidden Purple City and many other buildings of the old Kaiserstadt. In the Vietnam War Hue raged in 1968 fierce fighting. During the Tet offensive, significant parts of the old Emperor City were destroyed.