Cửa Hiển Nhơn (Hien Nhon Gate) is one of four gates located in the East of the Hue Imperial Citadel to enter and leave the Citadel. Hien Nhon Gate was built in 1805 under the reign of King Gia Long.

The Citadel Gate (Cu­a Ngo Mon) in Thua Thien Hue, Vietnam, is the main entrance to the Imperial City, a UNESCO World Heritage site and the former capital of Vietnam during the Nguyen Dynasty. The Citadel Gate is one of the most iconic structures within the Imperial City and serves as the entrance to the Forbidden Purple City, which was reserved exclusively for the emperor, his family, and his royal concubines.

Cu­a Chanh Dong hay cu­a Dong Ba (Chanh Dong Gate) is located in the east and is one of the ten main gates of Hue citadel. Dong Ba Gate was built in 1809 under the reign of King Gia Long. By the reign of King Minh Mang, it was solidly built and completed as it is today.

Hue City, located in Thua Thien Hue province in central Vietnam, is one of the country’s most historically and culturally significant cities. It served as the imperial capital of the Nguyen Dynasty from 1802 to 1945, making it a major center of Vietnamese history, architecture, and culture.

The Imperial City of Hue (Kinh Thanh Hue), located in Thua Thien Hue province, Vietnam, was the capital of the Nguyen Dynasty from 1802 to 1945. The Imperial City was built in the early 19th century during the reign of Emperor Gia Long and was designed to reflect the unique cultural and architectural traditions of Vietnam.

Cu­a Trai or Ke Trai of which the main name is Dong Bac Mon (Cu­a Dong Bac), is located in the northeast corner of Hue Citadel, on the west bank of the Dong BaRiver. The arch was built in 1809 under the reign of King Gia Long, and the upper floor was built in 1824 under the reign of King Minh Mang.

Thai To Mieu is a historical site located in Doan Thi Diem, Phu Ha­u, Thanh pho Hue, Thua Thien Hue, Vietnam. It is a temple complex dedicated to the worship of the first kings of the Nguyen dynasty.

Emperor Duc Duc's burial ground is a small complex that also includes the graves of Emperors Thanh Thai and Duy Tan. Emperor Duc Duc was the 11th emperor of the Nguyen Dynasty in Vietnam. Interestingly, Duc Duc was imprisoned by the court for being a Francophile and he died after reigning only three days in 1883. He was born on September 2, 1852, in Hue, the capital city of Vietnam at the time.

Vua Thanh Thai, whose full name was Nguyen Phuc Bu­u Lan, was the tenth emperor of the Nguyen Dynasty in Vietnam. He was born on March 14, 1879, and ruled from 1889 to 1907. Vua Thanh Thai ascended to the throne at a young age, only nine years old, after the death of Emperor Dong Khanh.

An Dinh Palace (Cung An Dinh) is a historic royal palace located in Hue, Thua Thien-Hue Province, Vietnam. It was built in 1917 during the reign of Emperor Khai Dinh of the Nguyen Dynasty and served as his summer palace.