When was Quang Tri Citadel built - The construction and development process

Located by the gentle Thach Han River, Quang Tri Citadel is not only a special national historical relic but also a symbol of the indomitable spirit of the Vietnamese people through many periods. Few people know that this construction was started in the early 19th century, under the Nguyen dynasty, with the initial purpose of being a solid military fortress, serving to guard the strategically important central region.

When was Quang Tri Citadel built - The construction and development process

Through centuries of upheaval, from the feudal era to colonialism, and especially during the fierce war against America, Quang Tri Citadel has continuously changed in role and architecture, becoming a vivid testament reflecting the history of struggle, loss, and the aspiration for peace of the entire nation.

1. When was Quang Tri Citadel built?

Quang Tri Citadel was built in 1809 during the reign of King Gia Long of the Nguyen dynasty. Initially, the citadel was built with earth in Tien Kien ward (now part of Trieu Thanh commune, Trieu Phong district).

In 1809, King Gia Long ordered the citadel to be relocated to its current position by the Thach Han River, in ward 2, Quang Tri town. However, it was not until 1837 under King Minh Mang's reign that the citadel was completed with fired bricks, taking nearly 28 years to build. This marked the transformation from a temporary earthen structure to a solid fortress, reflecting the military and administrative strategy of the Nguyen dynasty.

Photo: A vivid testament to history

2. The construction process of Quang Tri Citadel

To understand the architecture and historical significance of Quang Tri Citadel, we need to look back to the time of its construction, exploring the initial purpose and the efforts of the ancients in creating this structure.

Phase 1: Planning and relocation (1809-1832)
In 1809, King Gia Long realized that the location of Tien Kien was no longer suitable for the role of the administrative and military center of Quang Tri province. Therefore, he ordered the relocation of the administrative center to Thach Han commune, situated between the two villages of Co Vuu (later known as Tri Buu) and Thach Han. This area was chosen for its high terrain, favorable for defense and economic and cultural development. The citadel was built with earth, featuring rudimentary administrative buildings, laying the foundation for the political center of the region.

Phase 2: Solid construction with bricks (1837)
By the time of King Minh Mang, the Nguyen dynasty focused on strengthening national defense and developing infrastructure. In 1837, Quang Tri Citadel was rebuilt with large fired bricks, bonded with lime, molasses, and traditional additives. The structure has a square architecture in the Vauban style – a famous military defensive style, with a perimeter of over 2,000 meters, walls over 4 meters high, and a wall base thicker than 12 meters. The citadel has four main gates facing East, West, South, and North, and four bastions protruding at the four corners, surrounded by a solid water moat system.

Phase 3: Completion and central role (after 1837)
After completion, Quang Tri Citadel became the political, economic, and cultural center of the province, closely connected with the imperial capital of Hue. The inner citadel includes important structures such as the royal palace, flagpole, military governor's residence, granary, and barracks, built in the traditional Nguyen-style architecture. With its strategic position, the citadel was not only a military fortress but also a symbol of the dynasty's power, contributing to the development of the Quang Tri region.

Photo: A corner inside the Quang Tri Citadel museum

3. Historical milestones of Quang Tri Citadel

Since its construction until today, Quang Tri Citadel has gone through many development phases and witnessed countless important historical events.

Nguyen Dynasty (1802-1945): Military fortress and administrative headquarters
For over 160 years under the Nguyen dynasty, Quang Tri Citadel was the nerve center of the local government apparatus. It managed the political, economic, cultural, and social activities of the province. The citadel also served as a defensive fortress, protecting the land bordering the imperial capital of Hue.

French colonial period (1929 onwards): Prison for revolutionaries
From 1929, the French colonists built additional prisons within the Citadel, turning it into a place to imprison patriots and dissenters. The solid brick walls that once protected the Quang Tri region have now become witnesses to the brutal repression of the colonial regime.

Resistance against American imperialism (1968-1972): The fiery summer
Quang Tri Citadel became a global symbol during the resistance, especially through the 81-day-and-night battle in 1972 (from June 28 to September 16, 1972). In the "fiery summer" campaign, the U.S. and the Army of the Republic of Vietnam dropped over 328,000 tons of bombs here, equivalent to the destructive power of 7 atomic bombs. The citadel was almost flattened, with only the East gate and a few sections of the wall remaining, riddled with bomb craters. Thousands of soldiers sacrificed their lives, their blood and bones soaking into every inch of land, turning this place into a "graveyard without tombstones."

Photo: Thousands of soldiers sacrificed their lives in this battle

After the war: Restoration and commemoration
In the 1990s, Quang Tri province began restoring the Citadel as a historical relic. Sections of the walls were restored, the four main gates were rebuilt, and a central memorial was constructed, simulating a mass grave for the soldiers who fell during the 81 days and nights. The memorial embodies the philosophy of yin and yang, with an octagonal design (bagua), four entrances (four symbols), and a stylized roof, symbolizing the harmony between the living and the deceased.

Since 1997, restoration efforts have been intensified with projects such as a museum, a memorial for students, and a cultural park. Today, Quang Tri Citadel is a special national relic, attracting thousands of domestic and international visitors, becoming a "red address" for educating patriotic traditions.

4. Renovations and expansions of Quang Tri Citadel

Quang Tri Citadel has undergone many renovations due to damage from war and time. In the 1990s, the Quang Tri Provincial People's Committee began restoring and reconstructing some sections of the walls, rebuilding the four main gates, and constructing a central memorial to commemorate the 81-day-and-night battle in 1972. Recently, in 2025, the citadel is undergoing a major renovation phase, including reinforcing the walls and improving infrastructure to preserve the relic. The expansions mainly focus on restoring the original shape while adding modern elements such as museums and parks, transforming the citadel into a cultural space expanded over 25 hectares.

Photo: Releasing lanterns on the Thach Han River

Quang Tri Citadel, starting from 1809 under King Gia Long, has gone through nearly three centuries of ups and downs, becoming a historical witness and an immortal symbol of the Vietnamese nation. From a simple earthen fortress to a solid brick structure, from the administrative center of the Nguyen dynasty to a "graveyard without tombstones" during the war, this citadel not only tells the story of the past but also inspires today's generations about patriotism and the aspiration for peace.