Quang Tri Citadel is a historical fortress located in Quang Tri Province, Vietnam. Built in the early 19th century during the reign of Emperor Gia Long, it served as a military stronghold and administrative center. The citadel features impressive stone walls and a layout that reflects traditional Vietnamese architecture. The citadel played a significant role during the Vietnam War, particularly in the Battle of Quang Tri in 1972. Today, it stands as a symbol of resilience and is a popular tourist destination, attracting visitors interested in Vietnam's rich history and cultural heritage.