Hue Imperial City

143 years. That is how long the Nguyễn dynasty lasted. It was Vietnam's last royal dynasty. It began in 1802, when Nguyễn Phúc Ánh took the throne under the reign name Gia Long. It ended in 1945, when Emperor Bảo Đại abdicated. Thirteen emperors in all. And through all those years, the center of their power was one place: the Imperial City of Hue.

If you are standing in front of Ngọ Môn, the Noon Gate, take a close look at it. It has not one passage but five. The central one, the widest, was reserved for the emperor alone. The two beside it were for the civil and military mandarins. The two outermost were for elephants, horses and the soldiers who escorted the emperor. The order of rank began at the very first step into the palace. Above the gate stands the Ngũ Phụng pavilion, the Pavilion of the Five Phoenixes. At great ceremonies, the emperor stood there to issue his edicts to his subjects. The gate was completed under Emperor Minh Mạng, around 1833.

Đại Nội is the familiar name people in Hue use for this place. It actually covers two walled enclosures: Hoàng Thành, the imperial enclosure, and Tử Cấm Thành, the Purple Forbidden City. Together they form the core of the whole Hue Citadel, whose outermost ring runs about 10 kilometers around. Emperor Gia Long began building the citadel in 1805, guided by two ideas. One was Eastern feng shui. The other was the French Vauban style of fortress walls. Vauban was a French military engineer, famous for his defensive fortifications. Perhaps few royal palaces anywhere in the world have outer walls so shaped by European military engineering. That unusual blend is part of the heritage value of Hue. In 1993, UNESCO inscribed the Complex of Hue Monuments as the first World Heritage site in Vietnam.

Beyond Ngọ Môn lies a vast courtyard paved with stone. This is the Đại Triều Nghi courtyard. Twice a month, on the first day and the full-moon day of the lunar month, the emperor held a grand court here. Civil and military mandarins lined up at stone markers carved with their ranks. Ahead stands Thái Hoà Hall, the most important building in the Imperial City. The coronations of all 13 Nguyễn emperors took place here. It holds the throne. Its 80 wooden columns are lacquered red and gilded. Many panels of poetry and prose are carved into its wood, its stone and its blue enamel. In 2016, UNESCO added these poems and texts on the royal buildings of Hue to its Memory of the World Register for Asia and the Pacific. Memory of the World is UNESCO's program for documentary heritage.

In the name Tử Cấm Thành, the word tử means purple, but the name comes from Tử Vi, a group of stars that people of old believed was the palace of Heaven. The emperor was seen as the son of Heaven, so his home on earth carried the same word. The word cấm means forbidden, and this was restricted ground. Mandarins and soldiers could not enter at will, unlike the emperor, the young princes and the royal consorts. Through Đại Cung Môn, the Great Palace Gate, lies the most private space of the royal family.

Cần Chánh Hall was where the emperor handled the daily business of the state. Càn Thành Hall was where he rested. Both were completely destroyed in the years of war. For decades afterward, only their stone foundations remained. Standing before those foundations, you can picture the scale of what was lost. The stones also show why the work of conservation matters so much. It has gone on for more than 30 years, since the UNESCO inscription in 1993. In 2025, work began to rebuild Cần Chánh Hall on its old foundations, with new columns of ironwood. Before 1947, the Imperial City had about 147 buildings. What stands here today is the result of more than three decades of restoration and conservation.

At the far end of Tử Cấm Thành stands the Kiến Trung pavilion. It was built in 1921, under Emperor Khải Định, in a style that blends Asia and Europe. Outside, it carries traditional dragon and phoenix motifs. Inside, it has a French-style frame, colored glass and decorative ceramics. This was once the home of Emperor Bảo Đại and Empress Nam Phương, the last emperor and empress of Vietnam.

The two southern corners of Hoàng Thành hold two matching areas of worship, where the Nguyễn built four shrines. Triệu Miếu honors the ancestor Nguyễn Kim. Thái Miếu honors nine generations of Nguyễn lords. Hưng Miếu honors the father of Emperor Gia Long. Thế Miếu honors the emperors from Gia Long onward. In front of Thế Miếu rises Hiển Lâm Các, a three-story pavilion about 17 meters high. It is the tallest building in the Imperial City. Emperor Minh Mạng had it built to honor the achievements of the emperors before him. And in front of Hiển Lâm Các stand the Cửu Đỉnh, the Nine Urns. The same emperor had these bronze urns cast from 1835 to 1837. Each one bears its own name. Together the nine urns carry 162 images. They show the mountains and rivers, the products, the tools and the stars of Vietnam in the 19th century. The urns can be seen as a museum of geography, cast in bronze. In 2024, UNESCO added the relief castings on the Cửu Đỉnh to the same Memory of the World register.

To the west, the Diên Thọ and Trường Sanh palaces were the home of the Empresses Dowager. Of all the palace areas in the Imperial City, this one has best preserved both its wooden architecture and its gardens. The roofs here are double-tiered, two layers set one above the other, a hallmark of Nguyễn court architecture.

Just across the street from the Imperial City stands the Hue Museum of Royal Antiquities. It keeps more than 10,000 objects from the Nguyễn court, from dragon robes to royal seals, from blue-glazed porcelain to printing woodblocks. It is the most vivid archive of the dynasty's memory.

Hue is now the only city in Vietnam with eight UNESCO listings. They range from the complex of monuments to the royal court music called nhã nhạc, which is intangible heritage. They also include documentary heritage: the royal woodblocks, the imperial records, the poetry on the palace buildings, and the castings on the Cửu Đỉnh. The Imperial City is the center of all that heritage. Every motif on a hall's columns, every poem inlaid in a wooden beam, every stone foundation left after the war, all of it is part of a story 143 years long.